7.62x25 uppers

[zebcoboy]

Have seen the 7.62 uppers on two different M16 lowers and it was bang bang broken parts. Anyone else have better luck?

 

[Sam1911]

Apparently some do. Check out this thread in Rifles: http://www.thehighroad.org/showthread.php?t=470718

Some there have mentioned using them or registered lowers.

 

[WardenWolf]

Why is this in NFA? With a 16" barrel and a standard AR-15 it's legal normally.

As for 7.62x25 uppers, you're shooting something that's primarily a corrosive round (you bought it because ammo is cheap, right?) through a direct impingement gun. Do you have any idea what a nightmare that's going to be to clean? I honestly see NO point in shooting any corrosive rounds through an AR-15. You're just asking for trouble.

 

[Sam1911]

He put it in NFA because his question seems to be that the 7.62x25mm uppers he's seen broke on "M16 lowers." i.e.: when run on full-auto

"Bang bang broken parts." Not "bang bang bang bang...etc."

That's why I didn't merge this directly to the thread in Rifle as that one is mostly concerned with Title I rifles.

 

[zebcoboy]

Full auto 7.62x25

Broken extractors, extractor pins, extractor springs, ejector springs calapced, broken bolt, broken mag adapter, bad carrier, broken cam pin. These things have been a nightmare.

 

[PTK]

Bad brand to buy, it sounds like. I made a 7.62x25mm upper for a friend's M16a1, worked like a charm last I knew.

 

[zebcoboy]

7.62x25

Where did you have the gas hole in the barrel? Our guns are taking a terrible hammering and I wonder if there is too much pressure too soon.

 

[PTK]

The gas port was not present - I made it as a direct blowback with a heavy bolt.

 

[zebcoboy]

Thanks, that was my thinking also but I cannot convince my friend that that is the way to go. After he gets frustated enough I will make him a bolt and mag adapter with a stationary ejector. I was thinking that a single stack mag like a Sten mag would also be better. Time will tell.

 

[PTK]

Single feed mags are easier to do, yeah.

 

[clarence222]

So where can we get the parts to make this upper, I've looked at some of them online but want to make sure it will run in an M16

 

[zebcoboy]

7.62 uppers

I will not tell you where these units came from because in my opinion they are so poorly designed and will give you nothing but headaches. I don't care how cheap the ammo is it is not worth the trouble.
Just the other day I mentioned this system to a friend and he told me " I used one in the last subgun match and it ran great but it did have a lot of trigger slap and I did break a camming pin". Another unfortunate owner has been struggling with this conversion for over a month and has broken virtually every part except the cotter pin that holds the firing pin. I am doing you a favor.