Huldra arms 5.45x39

[mestes]

http://m.youtube.com/#/watch?desktop...evpTka-I&gl=US

[ghettoblaster]

Ya talked to new frontier and they say its cause huldra and adams arms don't us a mill spec bolt. They are mailing me a blow back hammer to replace it that is narrower and should not have this problem. They have a video on youtube where they fire off 75k rounds really fast with no problems. I will look for the video. But sounds it was from the none mill spec bolt.

Why couldn't you just replace the whole fire control system? I swapped out all the plastic interiors and kept the 5.45x39 spring from the upper set I purchased and it works just fine on my LW15 lower.

[mestes]

I guess you could I switched to mill spec lower and pws buffer tube and geissle trigger in mine. My friend that has two of the huldra piston uppers in the 556 with the lw15 lowers did just that he switched all the plastic lpk with metal and is over 600rds without a problem. And my buddies dad that has one of my lw15 lowers hasn't had any problems with it on a rra upper 556 upper. Guess I just had bad luck but I would at least switch the fire control group.

[Kaiser.Shooter]

Do you use a pmags or a 5.45 mags?
I've heard a lot of FTF's related to the magazines

[Dr_Fwd]

Pmags doesn't work with 5.45

[mestes]

I had two first gen pmags work perfectly. But others then those two specific mags no other mags I have tried work. Other gen 1, gen 2, lancers. I could not bring myself to cutting up a window one to try it. So I went to cproducts mags now and I just make sure the feed lips are the same. That was the only problem I have had with the cproducts. One side of the lip on one mag was a lil to high. Bent it down to match the other and now flawless. So one lil tweek to one mag and other 34 work fine. I plan on just sticking to the cproducts then messing around with others.

[mestes]

With the piston system I was getting bolt bounce back giving me soft strikes. So switched to the stiffer flat wire buffer spring and now works fine with my giessle trigger. For my non piston one I have not had any problems with just running a wolf powerspring in it.

[Kaiser.Shooter]

here is a dry pmag test
http://www.youtube.com/watch?v=TFN6JJ5uUTQ

[Dr_Fwd]

here is a dry pmag test
http://www.youtube.com/watch?v=TFN6JJ5uUTQ

From my experience - pmags don't work with 5.45. I was able to feed 8rds reliably but that was it, i have no idea how that guy on video did 20rds... Oh, and I actually fired them not dry cycled.

P. S. I've Just tried to load 20rds into ge3 Pmag and dry cycle - didn't work....

[Kaiser.Shooter]

it seems to be hit and miss, another vid this time live fire 20rds: http://www.youtube.com/watch?v=2OhDiVZiDkA

or modify it : http://www.youtube.com/watch?v=kVAziseKvWI