Archived Posts » 60,595,333
Tactical Solutions .22 upper on Plumcrazy polymer lower
3/10/2012 6:34:45 PM
I posted about this in October and November.
My .22 upper works fine on a DPMS lower.
On the Pluimcrazy lower it would not fire.
I bougfht and installed a .22 blowback hammer.
Now it fires, ejects the empty, and chambers a new round, but won't recock the hammer.
Any suggestions?
I think the bolt has too much resistance from the hammer when the bolt goes back to eject the empty and recock the hammer.
Should I buy a different hammer spring?
My .22 upper works fine on a DPMS lower.
On the Pluimcrazy lower it would not fire.
I bougfht and installed a .22 blowback hammer.
Now it fires, ejects the empty, and chambers a new round, but won't recock the hammer.
Any suggestions?
I think the bolt has too much resistance from the hammer when the bolt goes back to eject the empty and recock the hammer.
Should I buy a different hammer spring?
3/11/2012 11:01:35 AM
Originally Posted By arnie:
I posted about this in October and November.
My .22 upper works fine on a DPMS lower.
On the Pluimcrazy lower it would not fire.
I bougfht and installed a .22 blowback hammer.
Now it fires, ejects the empty, and chambers a new round, but won't recock the hammer.
Any suggestions?
I think the bolt has too much resistance from the hammer when the bolt goes back to eject the empty and recock the hammer.
Should I buy a different hammer spring?
Are you using the plastic LPK parts from the Plum Crazy? Most of the people I know with a Plum Crazy lower have either not used or replaced the plastic parts with metal and had better luck. But yes, I'd try a completely different FCG (the one from the DPMS) as well as just the spring.I posted about this in October and November.
My .22 upper works fine on a DPMS lower.
On the Pluimcrazy lower it would not fire.
I bougfht and installed a .22 blowback hammer.
Now it fires, ejects the empty, and chambers a new round, but won't recock the hammer.
Any suggestions?
I think the bolt has too much resistance from the hammer when the bolt goes back to eject the empty and recock the hammer.
Should I buy a different hammer spring?
3/16/2012 1:15:44 PM
I used a JP lightweight hammer spring in my Plum Crazy after replacing the composite fire control. works fine.
3/17/2012 11:34:54 AM
My Plumcrazy works fine with the Tactical Solution LT upper I just bought, fired 400 rounds with 3 or 4 FTF, upon inspection when cleaning, I noticed that the hammer have a scuff mark on the right side, it looks like it's dragging against the bolt so this might be a good solution:
A Plum Crazy blow back hammer replaces the standard Plum Crazy hammer. The blow back hammer is has been designed to be slightly narrower, resulting in better compatibility with dedicated AR-15 .22LR and 9mm uppers.
A Plum Crazy blow back hammer replaces the standard Plum Crazy hammer. The blow back hammer is has been designed to be slightly narrower, resulting in better compatibility with dedicated AR-15 .22LR and 9mm uppers.
3/27/2012 10:26:09 PM
Thanks for the responses.
Being cheap, I tried a different hammer spring, then I tried the hammer spring with the legs clipped off by about 1/8 inch, then I tried Stinger loads.
Nothing worked.
I still have a single shot.
It will fire, eject the empty, chamber a new round, but not cock the hammer so the new round can be fired.
I guess replacing tigger/sear/hammer with metal parts will be the next step..
" In re: the suggestion "I'd try a completely different FCG (the one from the DPMS)"....what is "FCG"?
Thanks again!
Being cheap, I tried a different hammer spring, then I tried the hammer spring with the legs clipped off by about 1/8 inch, then I tried Stinger loads.
Nothing worked.
I still have a single shot.
It will fire, eject the empty, chamber a new round, but not cock the hammer so the new round can be fired.
I guess replacing tigger/sear/hammer with metal parts will be the next step..
" In re: the suggestion "I'd try a completely different FCG (the one from the DPMS)"....what is "FCG"?
Thanks again!
3/27/2012 11:09:15 PM
"FCG" = Fire Control Group ( hammer, trigger, disconnector & springs).
