Mega Rad Gun Thread

[MrJokerRager]

What weight is the current buffer? I'd at play with the gas block a but to see if that brings it into an acceptable performance. If not than look into increased buffer or a heavier spring, like a Springco blue.

My rifle is a 16 inch mid length with low profile since its free floated.

And with an H1 buffer, it ejects the brass almost close to 1:00

 

[Pocket Dragoon]

Any good resources on hand grenades (their history, different models etc)?

Here you go, fam: Cat-UXO/grenades
(you can filter between hand, projected, and rifle)

 

[MrJokerRager]

After reading through multiple online forum threads.

My rifle has no adjustable gas block.

So I will have to replace the buffer tube for something heavier, buffer spring and BCG since the rifle manufacturer's BCG has been part of causing over gassing.

 

[Dean Pentel]

After reading through multiple online forum threads.

My rifle has no adjustable gas block.

So I will have to replace the buffer tube for something heavier, buffer spring and BCG since the rifle manufacturer's BCG has been part of causing over gassing.

How is the BCG part of the over-gassing? I could see if your current gas block has an issue with the opening in it being too large, but I've not heard of a BCG being an issue unless it's wildly out of spec.

You could start with running an H2 buffer and possibly a new/different spring. My opinion is you don't need an adjustable gas block unless you're going to run a suppressor or experiment with reloads.

 

[Club Sandwich]

H1 buffer, it ejects the brass almost close to 1:00

be sure you are using a standard carbine spring (10.5" length uncompressed, 37-39 coils). if so, then consider an H2 buffer. unless something is weird, a 16" should be softer ejecting than a normal carbine, all things being equal. your gas port might be over-sized. unless you have some secret sauce BCG, it would be strange to have an issue with it being related to excessive gas. if it's very light weight you might not be over-gassed but instead have excessive bolt velocity, which is a slightly different problem - be sure that you are using standardized parts when troubleshooting to narrow down the issue. lightweight carriers typically are intended to reduce lock time and achieve better splits in competition, but instead of increasing buffer weight, competitors dial in the gas precisely with a screw adjustment and use a modified spring explicitly chosen to work with their ammunition of choice.

if you are using standard ammunition (M193 equivalent, or 55gr .223 Rem Mag at around 3000 f/s in a 16" barrel) then standard parts should provide standard ejection pattern. if not, and you suspect excessive gas, inspect the gas port for being over-sized, inspect the action spring for correct length and coil count, inspect the buffer for correct weight (3.0oz for standard carbine, 5.0oz for standard rifle). note that well used action springs can be shorter than average. if the buffer system is in good order, and the bolt carrier group isn't especially modified for light weight or early unlocking, consider inspecting bolt lugs and barrel extension for rounded or broken corners/edges.

 

[MrJokerRager]

How is the BCG part of the over-gassing? I could see if your current gas block has an issue with the opening in it being too large, but I've not heard of a BCG being an issue unless it's wildly out of spec.

You could start with running an H2 buffer and possibly a new/different spring. My opinion is you don't need an adjustable gas block unless you're going to run a suppressor or experiment with reloads.

Well I swapped it for an H2 and a new spring, and will see how it does.

be sure you are using a standard carbine spring (10.5" length uncompressed, 37-39 coils). if so, then consider an H2 buffer. unless something is weird, a 16" should be softer ejecting than a normal carbine, all things being equal. your gas port might be over-sized. unless you have some secret sauce BCG, it would be strange to have an issue with it being related to excessive gas. if it's very light weight you might not be over-gassed but instead have excessive bolt velocity, which is a slightly different problem - be sure that you are using standardized parts when troubleshooting to narrow down the issue. lightweight carriers typically are intended to reduce lock time and achieve better splits in competition, but instead of increasing buffer weight, competitors dial in the gas precisely with a screw adjustment and use a modified spring explicitly chosen to work with their ammunition of choice.

if you are using standard ammunition (M193 equivalent, or 55gr .223 Rem Mag at around 3000 f/s in a 16" barrel) then standard parts should provide standard ejection pattern. if not, and you suspect excessive gas, inspect the gas port for being over-sized, inspect the action spring for correct length and coil count, inspect the buffer for correct weight (3.0oz for standard carbine, 5.0oz for standard rifle). note that well used action springs can be shorter than average. if the buffer system is in good order, and the bolt carrier group isn't especially modified for light weight or early unlocking, consider inspecting bolt lugs and barrel extension for rounded or broken corners/edges.

The BCG was advertised as some "enhanced" BCG by the manufacturer that supposedly makes it in house.

It did feel kind of loose fitting as it would sometimes back out of the upper receiver during cleaning time on its own.

I replaced the BCG with a BCM BCG spare that I had lying around. The BCM snuggly fit in there and I will see how it does.

In reference to the ammo and ejection pattern earlier stated, I was using the standard M193 55 grain 5.56mm from Winchester.

 

[Alcoholism]

Anyone here have experience with/opinions on Sako?

I'm considering a Sako 90 Bavarian or a Tikka T3x Arctic and am curious if folks have put optics on these with the iron sights.

 

[Romulus augustulus]

Anyone here have experience with/opinions on Sako?

I'm considering a Sako 90 Bavarian or a Tikka T3x Arctic and am curious if folks have put optics on these with the iron sights.

My dad has a Tikka. seems to be quality. bolt is smooth. He hasn't shot it, and probably never will because he buys things and never does anything with them.

 

[Smoke Manmuscle]

Anyone here have experience with/opinions on Sako?

I'm considering a Sako 90 Bavarian or a Tikka T3x Arctic and am curious if folks have put optics on these with the iron sights.

T3x in 308 is my go to for hunting. It’s taken plenty of deer and never had an issue.

 

[Blasterisk]

I want to start an epic keyboard smashing debate here:

I don't think modern silencer baffle design does that much, and I am willing to be proved wrong.

I think the best answer to the gas expansion problem is large volume and easy flow, and that thin baffles with large expansion chambers beat the odd squares and triangles in modern cans. See figure 1.



The hypothesis that odd and irregular shapes disrupt gas flow is true, of course, but I think what would be more helpful is a reduction of exhaust gasses to atmospheric temperature and pressure before they escape the end of the gun. Cars have RPMs higher than machine guns, but are quieter than most silenced rifles. I was inspired by what turned out to be a mistaken view of car mufflers on my part, which is amusing if you know the history of how those came to be.

 

[MrJokerRager]

 

[Troon_Patrol]

I want to start an epic keyboard smashing debate here:

I don't think modern silencer baffle design does that much, and I am willing to be proved wrong.

I think the best answer to the gas expansion problem is large volume and easy flow, and that thin baffles with large expansion chambers beat the odd squares and triangles in modern cans. See figure 1.

View attachment 5640500

The hypothesis that odd and irregular shapes disrupt gas flow is true, of course, but I think what would be more helpful is a reduction of exhaust gasses to atmospheric temperature and pressure before they escape the end of the gun. Cars have RPMs higher than machine guns, but are quieter than most silenced rifles. I was inspired by what turned out to be a mistaken view of car mufflers on my part, which is amusing if you know the history of how those came to be.

I really think we need to throw the whole fucking decibel sound metric out the window and start fresh. First of all suppressors never sound quite right when recorded, I know there are people here who have more experience than I when it comes to cans. I think I've put maybe 2,000-3,000 rounds through cans? .22LR , .300 BLK a lot of 9mm. My hearing is not as great as my eyesight but, when I'm watching some guntube clip %95 of the time it doesn't sound right at all to me. And when they actually post DB ratings it make no sense, I have fucked around with little amateur level DB devices and found almost no correlation to actual "quiet". We need to come up with a new metric, "S.N.F." "Snuff" suppressed noise factor. Something with a catchy name to push it through. Maybe the science exists maybe it does not but, decibels are like Fahrenheit temperature, it doesn't really correlate to anything the human brain can process it's just a number and we know 6 is greater than 5 but 10 is not double of 5 and 20 is not 4 times greater than 5 and so on. I would propose the SNF starts at 1 goes to 100, with a full power cartridge just below destructive device caliber something like .50BMG Ball ammo out of a "16 barrel should equal 95 SNF. At the other end of the spectrum .22 LR subsonic suppressed 3" barrel 9" can should be around 5 SNF. The rating isn't purely based on how loud but how long the report carries. The same way we have muzzle energy described as a combination of velocity and mass. Now that is not a perfect metric and neither would what I propose but, it would be better than the DB system which makes no fucking sense at all. If the science is not there yet, I think we should gather all the supresser industry people at SHOT, have a few independant people not directly involed in the supressor biz and do a blind 1-10 test. Fired from a bolt action rail gun sandbagged to the ground. You submit your can, it gets a random serial number and it's shot 10 times with a standard and possibly an underpowered subsonic load. The same way judges can judge olypic diving it's given a score and now when surefire sells the next product they can claim it came it under a unanimous industry standard rating of "8.5/10 SNF" with 9mm ball ammo. This will give the consumer a much better grasp of what they are buying and probably cut down the cost of recreational cans not rated for F/A, not made of exotic materials to a very low and fair price. In other countries where supressors are not regulared they are dirt cheap. IMHO in the U.S. there is this concept of if you are going to wait for the NFA to aproove, go through all the bullshit paperwork you might as well buy the top of the line, without regulation people would paying $40 for a stainless steel 9mm can and maybe $200 for some crazy high end iconel device.


On the subject of muzzle devices....

I am rebuilding my Norinco MAK90, I want to able to attach a device to my unthreaded muzzle, most likely a simply brake or flash supressor. But, I have measured the OD of the muzzle to be .545" standard thread for a .308/7.62 projectile is 5/8"-24 , 5/8"= .625 obviously I cannot turn a 5/8-24 thread on a peice of steel .545 OD. So, should I attempt to press on some kind of thread extention and weld and then turn down the welds? Press on a .700 sleeve and then turn that down to .625" and then thread? Make my own custom thread and commit to one muzzle device by matching the thread on that? I don't want to got M14x1 LH and my lathe will not cut metric threads only US standard pitch.

 

[TerminalTryHard]

I really think we need to throw the whole fucking decibel sound metric out the window and start fresh. First of all suppressors never sound quite right when recorded, I know there are people here who have more experience than I when it comes to cans. I think I've put maybe 2,000-3,000 rounds through cans? .22LR , .300 BLK a lot of 9mm. My hearing is not as great as my eyesight but, when I'm watching some guntube clip %95 of the time it doesn't sound right at all to me. And when they actually post DB ratings it make no sense, I have fucked around with little amateur level DB devices and found almost no correlation to actual "quiet". We need to come up with a new metric, "S.N.F." "Snuff" suppressed noise factor. Something with a catchy name to push it through. Maybe the science exists maybe it does not but, decibels are like Fahrenheit temperature, it doesn't really correlate to anything the human brain can process it's just a number and we know 6 is greater than 5 but 10 is not double of 5 and 20 is not 4 times greater than 5 and so on. I would propose the SNF starts at 1 goes to 100, with a full power cartridge just below destructive device caliber something like .50BMG Ball ammo out of a "16 barrel should equal 95 SNF. At the other end of the spectrum .22 LR subsonic suppressed 3" barrel 9" can should be around 5 SNF. The rating isn't purely based on how loud but how long the report carries. The same way we have muzzle energy described as a combination of velocity and mass. Now that is not a perfect metric and neither would what I propose but, it would be better than the DB system

Have you looked at Pew Science's stuff? He's real big on peak dB being a stupid metric as well and has begun mapping the entire sound wave of the suppressor.

https://pewscience.com/

 

[WelperHelper99]

You know, I had an interesting thought about machine pistols, which I have been thinking about because of all the stories of Glock switches popping up:

The main problem people have with machine pistols as a concept is that they are very difficult to control. Part of that is that most machine pistols seem to have a very high RPM. I’m guessing this comes from the short distance of the slide travel when firing in full auto, combined with the usage of regular ammunition like 9mm or .45.

Would there be a way to create an operating system for a machine pistol that lends itself to a relatively slow RPM, maybe something around 500-600 RPM (aka M3 Grease Gun range)? Also, it should be chambered in a cartridge like .22 Magnum (or perhaps a centerfire equivalent if the rim proves to be an issue). In a machine pistol individual cartridge power shouldn’t matter as much as accuracy and capacity, which I think something like .22 mag would be great for, while still retaining a bit more power than something like .22LR. I think that individually one of these two things would work for an effective machine pistol, but combined would be much better.

I’m reminded of a contender to replace the M1911 back in the ‘70s called the Colt S.C.A.M.P. (Small CAliber Machine Pistol, gotta love the military and their desire to give everything a catchy acronym). It was a machine pistol chambered in a proprietary .22 caliber cartridge, which allowed the pistol a fairly impressive capacity of 27 rounds. The SCAMP was apparently considered controllable and well liked by those who fired it, but was never pursued further by the military:
View attachment 5633980
(I also just think it looks cool, like the RoboCop gun)

Anyways what are you guy’s thoughts on this concept?

Without just packing on so much weight, I'd think some sort of rate reducer, like in the Stechkin or Skorpion, just way beefier. Otherwise I think the problem lies with the fact that a pistol is around 2 pounds on the high end. Mass means a lot with recoil. You'd have to overbuild this pistol to such a degree that it might as well be a light smg just to reduce the rate

 

[Fried-Rice12]

I want to start an epic keyboard smashing debate here:

I don't think modern silencer baffle design does that much, and I am willing to be proved wrong.

I think the best answer to the gas expansion problem is large volume and easy flow, and that thin baffles with large expansion chambers beat the odd squares and triangles in modern cans. See figure 1.

View attachment 5640500

The hypothesis that odd and irregular shapes disrupt gas flow is true, of course, but I think what would be more helpful is a reduction of exhaust gasses to atmospheric temperature and pressure before they escape the end of the gun. Cars have RPMs higher than machine guns, but are quieter than most silenced rifles. I was inspired by what turned out to be a mistaken view of car mufflers on my part, which is amusing if you know the history of how those came to be.

The one true suppressor is a repurposed oil filter.
Anything and everything else is expensive heresy.

 

[Shamefur Dispray]

I'm looking to purchase a new ccw. I've been watching alot of videos on .357 sig and I really like the performance from everything I've seen. But I keep hearing it's a round that is being phased out and theres really only two companies even making modern pistols chambering the thing: Glock and Sig. Not to mention that the price of even the cheap stuff is quite high. What are your guys thoughts on it? Am I better off sticking with 9mm? Or would something like 40 s&w be a wiser choice? Like I said I've looked into quite a bit but I always appreciate input from other Farmers

 

[HumptiDouji]

Norinco AKs tend to be very good quality

The ones from back when they were exported to the US were good, ranging from decent for most of them, to quite good for a rarer minority, and then (mostly) really good for the Polytech Legend brand, which was part of Norinco. I say mostly, because while all the metal on Polytech Legend AKs generally had very nice fit and finish (barring some seldom seen defects), they still used the same cheap and soft chu wood as for Norinco AKs and SKSs, just with a dark brown stain to them.

However, these days they apparently cut corners like fucking crazy on their AKs as to make them the 'Saturday Night Special of Assault Rifles' to borrow a phrase from a histrionic fat woman.
https://www.thefirearmblog.com/blog...ov-variant-part-3-type-56-2-quantity-quality/
I would suggest anyone into Kalashnikovs to read Onokoy's articles on them, he's got a lot of experience with them and has been writing articles about AKs of various national origins for a while now. If anything it tells you a lot very interesting little Warsaw Pact history. TFB is mostly a blotter for the American and European commercial industries, and that has its place, but they've got a few authors like these which I think are their very best value.

Cut down Winchester M1907 with snail drum, chopped stock and front grip

I believe those were converted to 9mm Parabellum, hence the Luger drums, and they were guerilla weapons.
Presumably it was not that easy to source the Winchester blowback rifle cartridges around those parts, while 9mm was already getting around in all kinds of places by that time period.
I do wonder when the drums were sourced exactly, since Germany were made to destroy the vast majority of their snail drums after WW1.

Were bayonets effective on the M16A4

You can't be QUITE as violent using a bayonet for AR15s, like with an M1 or SKS, or all the old military bolt actions, where the stock also fulfills the function of cracking open skulls, but they'll handle jabbing and stabbing just fine. Even the M16A1 with its slimmer barrel profile will tolerate it.

Anyways what are you guy’s thoughts on this concept?

Rate reduction is one way, like the doodad inside the pistolgrip of the Vz.61 Scorpion, keeps the cyclic rate very tolerable. Given the (sadly cancelled) 9mm Parabellum version which Ian showed off, this works pretty well even for a blowback 9mm gun, you just can't one-hand that one in full-auto like you can the original .32 (but it can still be shot like a pistol in semi).

Otherwise, I think the Beretta 93r is one of the best approaches. Vent the muzzle, provide a very secure folding foregrip setup which is integral to the trigger guard (which you hook your thumb through, not gonna lose that grip), and limit the gun to Safe/Semi/Burst. You've got a solid enough forward point of contact, and you'd only ever be able to let off three shots at once, letting you keep the gun in control even with a very high cyclic rate.
I imagine that it's one kind of weapon which could benefit from having a laser in case you wanted to use it without a stock (but regrettably, I'll never get to test that theory out). You could definitely also make improvements on the 93r as a concept, but it will detract from the critical Beretta/Robocop sex appeal.

IMHO the .32 belongs in the mouseguns.

I think it's just about the perfect pocket pistol cartridge, centerfire with a decent bit more power than .22LR, not loud or blasty, and you can still fit like 8 or 10 rounds in a pistol small and light enough that you can discreetly slip it into the pocket of a pair of sweatpants. The obvious improvement would be if it was properly rimless, in which case it would be trivial to double or nearly doubly the capacity of any given design (you wouldn't even need a spare magazine), but I don't see that happening, and I think these guns are still ok as single stack.

I wish there was a .32 revival, where Ruger would bring out an LCP32, and some companies would start rolling out some nice and affordable plinking ammo, along with some good defensive loads. Makes much more sense to me than rejuvenating 5.7mm
The Seecamp is very cool, but that it doesn't fit normal FMJ is a big drawback IMO.

 

[Blasterisk]

RE: Machine pistols

I've been pondering the "MP5K we have at home" thing for a bit, and here's my best crack at a budget solution:

The fact is that a machine pistol the size of a pistol will fail, so if you just add comp/stubby like it's BF4 and maybe a decent stock, you've doubled its size and quadrupled its effectiveness.

Hypothetically doable for less than $500USD, but don't do it if it's illegal in your jurisdiction. I support all laws and the brave men who enforce them.

 

[TerminalTryHard]

I'm looking to purchase a new ccw. I've been watching alot of videos on .357 sig and I really like the performance from everything I've seen. But I keep hearing it's a round that is being phased out and theres really only two companies even making modern pistols chambering the thing: Glock and Sig. Not to mention that the price of even the cheap stuff is quite high. What are your guys thoughts on it? Am I better off sticking with 9mm? Or would something like 40 s&w be a wiser choice? Like I said I've looked into quite a bit but I always appreciate input from other Farmers

Just stick with 9mm, 357 Sig's ballistic are better but they're not significant enough to really matter. Especially when you consider recoil, capacity and cost of ammo.

Unless you plan to shoot a lot out past 50 yards, then go for it I guess.

 

[Falcos_Commisar]

However, these days they apparently cut corners like fucking crazy on their AKs as to make them the 'Saturday Night Special of Assault Rifles' to borrow a phrase from a histrionic fat woman.
https://www.thefirearmblog.com/blog...ov-variant-part-3-type-56-2-quantity-quality/
I would suggest anyone into Kalashnikovs to read Onokoy's articles on them, he's got a lot of experience with them and has been writing articles about AKs of various national origins for a while now. If anything it tells you a lot very interesting little Warsaw Pact history. TFB is mostly a blotter for the American and European commercial industries, and that has its place, but they've got a few authors like these which I think are their very best value

Goddamn Chinese companies managed to make a AK that falls apart with original tooling...

$93 for an AK sounds interesting until it blows apart in a firefight.

I think it's just about the perfect pocket pistol cartridge, centerfire with a decent bit more power than .22LR, not loud or blasty, and you can still fit like 8 or 10 rounds in a pistol small and light enough that you can discreetly slip it into the pocket of a pair of sweatpants. The obvious improvement would be if it was properly rimless, in which case it would be trivial to double or nearly doubly the capacity of any given design (you wouldn't even need a spare magazine), but I don't see that happening, and I think these guns are still ok as single stack.

I wish there was a .32 revival, where Ruger would bring out an LCP32, and some companies would start rolling out some nice and affordable plinking ammo, along with some good defensive loads. Makes much more sense to me than rejuvenating 5.7mm
The Seecamp is very cool, but that it doesn't fit normal FMJ is a big drawback IMO.

Agreed. The lack of modern .32 pistols is a crime and bless Keltec for continuing to make the P32. Beretta also makes the Bobcat in .32 as well although it's kinda large for what it is.



Ruger needs to make on ASAP vs their .22lr pocket pistols.

Oh and Walther.... Make the DAMN PPK in the CORRECT CALIBER