- Joined
- Jan 20, 2014
my god the optic mount fits
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I am in agreement that under normal circumstances the MWI URR isn’t necessary. I was recommending it to the poster who said he couldn’t get a barrel nut loose without adding more leverage to a breaker bar. I have seen broken receivers and index pins, but I have not had it happen to me.the MWI URR (and a few others) have a sail that engages the charging handle journal, yes, this prevents rotation. the BEV block has a similar "nub" that isn't as substantial that also prevents rotation as well as the entire "block" portion that sits vertically in the BCG path. if you want, you can remove the bolt and install the BCG as well as the BEV block and it will not rotate.
i think you are overplaying how much rotatable moment is going on here as well as not understanding that when you engage with the barrel extension, you are transmitting force from the wrench, through the barrel nut, through the upper, which is free to rotate slightly but kept from doing so by a sail or nub as the case may be. the clamping force exerted by the nut is immediately relieved during removal, and when installing, that clamping force is not intended to be significant. 35-80 ft-lb about arm's strength. this is not the shear failure or plastic deformation point of 7075 aluminum, it is well below it.
if you are applying enough torque to go well beyond this, that is a problem of the person using the breaker bar or whatever trying to goon the nut on the upper (which you should not do), and during removal if there is excessive force needed to remove, there are methods that can make it easier such as penetrating oil, heat, cut off wheels, et c. i can dig around for a junk upper and see what exactly it would take to actually break it through ineffective rotation stopping power. i guarantee you it will be far in excess of any human's arm strength.
you do you though, if you sleep easier with using an MWI URR and then i think you're all the better for it vs bubba using a piece of carpet, some cardboard, and a couple whacks on the vise's arm.
That reminded me of this pic I got off Operatorchan forever ago. I don't remember everything the OP said about it (he was a gunsmith and this wandered into his shop) but IIRC the lower is a cast Ruger lower from the 80s. The handguard is off of an XM148 and I have no clue what the muzzle device came from. Also note the Fiberlite stock and an A1 pistol grip that has been modified to have a hump akin to an A2 grip.Their AR lowers got a unique aesthetic going.
Usually people go the other way with that.A1 pistol grip that has been modified to have a hump akin to an A2 grip
Thank God for....That reminded me of this pic I got off Operatorchan forever ago. I don't remember everything the OP said about it (he was a gunsmith and this wandered into his shop) but IIRC the lower is a cast Ruger lower from the 80s. The handguard is off of an XM148 and I have no clue what the muzzle device came from. Also note the Fiberlite stock and an A1 pistol grip that has been modified to have a hump akin to an A2 grip.
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The K vs normal MP5 differences only matter for handguards and stocks/braces. The K and fullsize MP5 patterns use different buttplate geometry. There are a few MP5K clone manufacturers like POF (the Pakistanis) that make a mullet gun, short in the front, full size in the rear.i might be retarded. the MFI rail i got for my MP5 is listed for an MP5K but on the MFI website they're saying i can do whatever. there isn't a real difference, is there? i could have just slapped the rail on the whole time? i haven't opened the packaging up since i've found out how anal HKparts is with returns
Based on the parts involved I think it was put together in the 1980s when the A2 was the new hotness and owners were more amenable to its grip over the A1. The A2 had so much interest that Colt's early SP2s were basically just SP1s with A2 furniture and A2 profile barrels, with the same upper and lower as the SP1, until they updated the forgings.Usually people go the other way with that.
IIRC Pauls M16 was one of those SP1's w/ A2 furniture.Based on the parts involved I think it was put together in the 1980s when the A2 was the new hotness and owners were more amenable to its grip over the A1. The A2 had so much interest that Colt's early SP2s were basically just SP1s with A2 furniture and A2 profile barrels, with the same upper and lower as the SP1, until they updated the forgings.
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I have a BEV block and it works rather well.the BEV block has a steel barrel extension insert for the locking lugs and also takes up space on the interior of the upper receiver. it's not the hinge pin taking all the force.
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IIRC when I bought stripped lower receivers in California, they were required to sell me a gun lock with it.Jesus Christ I hate the legal bullshit, especially in Maryland.
Man, i had to go into Maryland a few times during my time in D.C and the smell of oppressively retarded politics hung in the air almost as much as it does inside the beltway.Maryland.
It's my home state and I love it, but I'm definitely aware it's deeply flawed. And none of that love extends to its government.Man, i had to go into Maryland a few times during my time in D.C and the smell of oppressively retarded politics hung in the air almost as much as it does inside the beltway.
not a fan.
I'm lucky i was on the Virginia side so i didn't have to worry about any of that shit.It's my home state and I love it, but I'm definitely aware it's deeply flawed. And none of that love extends to its government.
The government is incredibly retarded.
Gun-wise, as retarded as some of Maryland's laws are, most of them are really poorly thought up and implemented. (In a good way sometimes.)
Like for example, we have a mag limit. Except it only covers purchases or transfers. I legit just go down to that gun show near DC every so often to stock up on all the 25 round magazines and literally walk them over the border legally.
Or their attempt at banning the AR was completely retarded. Owning a 5.56 AR is supposed to be banned here, unless you have a "heavy barrel", which is not defined in statute. You pretty much just buy a barrel advertised as HBAR, keep the receipt, and you're good to go.
MD wants to larp as some of the more maliciously anti-gun places like CA and NY, but they never quite pull it off.
Most of my bitching about our gun laws is how much of a pain in the ass they are, even though ultimately there are loopholes you can drive a truck through.
There has been another instancedon't know what's going on here, It's a Val, being held by Konstantin Lazarev, but it doesn't have the associated (and very poorly designed) suppressor. Val modified to act as an SR-3? Super short "Moderator", BFA? (I've never even heard of such a thing)
I think it looks cool, but that's probably because it reminds me of an UZI. The caliber itself is a bit goofy though, and a product of its time. Modern 9mm hollow points perform well enough for PDW purposes. Of course, .300 BLK shorties offer much better terminal ballistics, at the cost of extra weight. A Sig Rattler with a full 30 round magazine is almost double the weight of an MP7 with a full 40 round magazine.Am I the only one who thinks the MP7 looks like shit? So many guns can do a better job in that role, and dont look like garbage. FA not withstanding.
What PDW type subguns are better for the role? The P90? The MP9?Am I the only one who thinks the MP7 looks like shit? So many guns can do a better job in that role, and dont look like garbage. FA not withstanding.
Kel Tec P50.What PDW type subguns are better for the role? The P90? The MP9?
This reminds me of a story about a rapper who ended up getting a charge for “firing a missile into an occupied dwelling” or something like that that was used to boost his street cred and made everyone think he was a badass firing RPGs to blow up his opp’s houses. Turns out that the charge (think it was in Florida) used the very literal definition of a “missile” simply meaning a projectile, and he actually got the charge just because he threw a rock at someone’s house.2. Footage hasn't come out of a hoodrat literally " lighting up the opps"