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Discussion Starter · #1 · (Edited)
I'm sick and tired of troubleshooting this PTR32 PDW w/ sear pack.
It worked about 80% reliable for a few months before, and now it's running at about 25% reliability.

My current setup:
Qualified sear pack properly setup by IGF (retimmed hammer & G3 hammer spring)
PTR full-auto carrier & ejector
Changed the extractor spring & also tried RCM 65' locking piece: NO difference in reliability
PTR recently repaired broken collapsible recoil rod (broke before)
Ammo used: Wolf

Why am I getting these type of massive light primer strike?
Any recommendation to solve this annoying issue?
Should I give up?




 

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I tried everything you did except a tungsten filled carrier before I finally gave up I even tried a Rhinemetal and a shortened stiffer locking lever spring.........I believe the whole issue is bolt bounce

Edit (and for OP clarification mine was a gen 1.5 not the PDW but same issue on the primer strikes)
So why did you stop at not installing a tungsten filled carrier? Like a heavy buff in a M16, isn't the whole point of the loose tungsten in the carrier to act as a delayed weight to counter act bolt bounce? I've seen the same light strikes on a BPP-23E. Carlos for got to put tungsten in the carrier. The owner got a MM23 carrier that had tungsten granules in it and problem solved. Isn't all HK machineguns supposed to have the tungsten granules in the carriers? If the PTR full auto carriers don't have tungsten granules, no wonder you're getting bolt bounce.

Scott
 

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So why did you stop at not installing a tungsten filled carrier? Like a heavy buff in a M16, isn't the whole point of the loose tungsten in the carrier to act as a delayed weight to counter act bolt bounce? I've seen the same light strikes on a BPP-23E. Carlos for got to put tungsten in the carrier. The owner got a MM23 carrier that had tungsten granules in it and problem solved. Isn't all HK machineguns supposed to have the tungsten granules in the carriers? If the PTR full auto carriers don't have tungsten granules, no wonder you're getting bolt bounce.

Scott
Same Rhinemetal worked in a 91 at the time......other 32's working w/o one..........if I try another 32 in future I will but I am not sure that is a 100 percent solution..........every other Roller Lock I have works fine w/o tungsten carrier........YMMV
 

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Discussion Starter · #5 ·
Mine is Gen 2 PTR32 PDW.
It has PTR full-auto carrier purchased directly from HKparts.
Not sure whether it was filled with Tungsten or not....
 

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I had a similar issue but I couldn't figure out if it was bolt bounce or if the bolt was dragging and just not closing all the way into battery. My primers were barely touched yours look much better. Do you think an extra-power hammer spring might help?
 

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Discussion Starter · #7 · (Edited)
As matter of fact, extra power spring will be my last attempt to resolve this issue.
I think it's the bolt that's just not fully closing (even with hard HK slap).
Perhaps, something is dragging but my shelf height is perfect and can't figure it out.

I also wanted to hear from the actual user who fixed the issue and achieving 95%+ reliability.


I had a similar issue but I couldn't figure out if it was bolt bounce or if the bolt was dragging and just not closing all the way into battery. My primers were barely touched yours look much better. Do you think an extra-power hammer spring might help?
 

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coolhand: hang in there bro. I had the same light primer strikes with Golden Tiger when testing with the PTR semi carrier and their S-U-O lower. I purchased a used G3 FA carrier and an HK#15 LP. At the time I suspected, from viewing other threads, that the PTR carrier locking lever spring was weak and the culprit. Since these changes she devours everything including 72 round beta mags! I also found that their SUO lower was not good. Can't remember why. I switched to a c/p SEF.
 

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Discussion Starter · #9 ·
Hey Kwesi! glad to hear that your 32K is working great.
Unfortunately, #15 RCM locking piece & carrier locking lever spring made no difference on my 32 PDW...

My pack is setup for 4 position Burst pack and the shelf height is also perfect.
Just can't figure out the issue... I'm going to order new extra power hammer spring, and see how it works.
If it doesn't work, then I'm seriously consider using it as a boat anchor :(

coolhand: hang in there bro. I had the same light primer strikes with Golden Tiger when testing with the PTR semi carrier and their S-U-O lower. I purchased a used G3 FA carrier and an HK#15 LP. At the time I suspected, from viewing other threads, that the PTR carrier locking lever spring was weak and the culprit. Since these changes she devours everything including 72 round beta mags! I also found that their SUO lower was not good. Can't remember why. I switched to a c/p SEF.
 

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Same Rhinemetal worked in a 91 at the time......other 32's working w/o one..........if I try another 32 in future I will but I am not sure that is a 100 percent solution..........every other Roller Lock I have works fine w/o tungsten carrier........YMMV
As I recall the bolt locking spring is modified in the 32 which is not a problem for a semi, but wold be in auto. This is an "auto" problem. So to me the locking lever spring and even more so the tungsten in the carrier would be must haves for full auto function.

Scott
 

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OP, I have the same set up as you and the same issues. I came across a thread that mentioned replacing the bolt locking spring and replacing the hammer spring as offered by HK parts. When the parts came and I installed them, it was like I was shooting another weapon. I feel your pain...Try these two. if these don't help than take the boat out.

Good luck!
 

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Discussion Starter · #12 ·
Thanks Har1340, will try that :)


OP, I have the same set up as you and the same issues. I came across a thread that mentioned replacing the bolt locking spring and replacing the hammer spring as offered by HK parts. When the parts came and I installed them, it was like I was shooting another weapon. I feel your pain...Try these two. if these don't help than take the boat out.

Good luck!
 

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As I recall the bolt locking spring is modified in the 32 which is not a problem for a semi, but wold be in auto. This is an "auto" problem. So to me the locking lever spring and even more so the tungsten in the carrier would be must haves for full auto function.

Scott
I had talked with Jeff he though the problem would be the locking spring as well I sent him the carrier and he modified the spring...........
 

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Discussion Starter · #14 · (Edited)
Could you share how he modified the carrier?
How's your gun after Jeff's work? Is it running 100% now?


I had talked with Jeff he though the problem would be the locking spring as well I sent him the carrier and he modified the spring...........
 

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I think it is the ammo with those huge dents.
Remember 7.62x39 ammo was mainly used and mfgd. for AK's with floating firing pins hence being harder.
As mention a stronger spring should help as with those hits it doesn't look like BB.
The burst pack takes a lot of energy away from the spring also.
MM
 

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....was thinking same thing as Mike. Those primers look hit pretty hard in my opinion. When my 32 would light primer strike, they were very light. Replacing the cut carrier "claw" spring fixed mine.

Kevin
 

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My PTR 32 runs like a clock with no modification. My only concern is friends burning out the barrel, expecially after I SBRed it.

I agree with the fox. Those primers look like they should have fired.
 

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Maybe another way to find the problem is for the OP to purchase a box of Winchester or similar factory brass cased ammo with American primers verses over sea's ammo that has "harder" primers.
 
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