That’s what’s already installed. Didn’t get to the range today, wife wants a new laptop and smoked tuna both ASAP.I used the most heavy SCS spring JP has (designed for 308 I think).
That’s what’s already installed. Didn’t get to the range today, wife wants a new laptop and smoked tuna both ASAP.I used the most heavy SCS spring JP has (designed for 308 I think).
That’s what’s already installed. Didn’t get to the range today, wife wants a new laptop and smoked tuna both ASAP.
Ahhh, the sacrifices we make!
In the interest of full detail disclosure, in addition to the JP SCS, I also removed the pinned in weight in the CMMG 9MM BCG.
All conventional wisdom says the weight is required or your carbine becomes an atomic bomb.
Losing the pinned bolt weight made a noticeable reduction in "dot dip" and cycle speed aka smoothness.
I have yet to experience any issues, and my carbine has seen at least 5k rounds of my reloads.
IIRC, my CMMG bolt with weight removed still weighs more than the FACTORY JP 9mm bolt that they use in thier badarse 9mm AR game gun.
FWIW, with the heavy 9mm buffer/weighted bolt setup, a 147gr heavy 9mm felt smoother.
With the current SCS/no bolt weight, 115GR @ max load of titegroup is smoother shooting.
My carbine has a 7" barrel. I can't speak to what effect a 16" tube will have.
I’m an idiot. The weight is already out.I’m gonna try that today, thought that doing so would cause all sorts of problems. Given the lower mass did you need to increase the spring to get it to chamber reliably?
I’m an idiot. The weight is already out.
Been quite a while since I shot her, much less looked inside.
Yes, your AR feels great with the scs buffer and lower mass bcg. How does it run suppressed now? Eventually I'd like to do a colt DOE upper, and I never liked my old setup with the regular bolt and heavy slash buffer. The twang was too loud suppressed, and the bolt slamming back and forth was way worse than any 5.56 gun.
Btw, I will eventually build an UMP in .45 or 9mm not because it's better or can shoot faster than whatever PCC, but just because it's cool. I have the gun and the stamp, just not the desire to throw $100 bills at it right now.
I'm going to bump this because I am back looking at the CMMG radial delayed blowback system again. Seems that on the Banshee, the 9MM Colt offerings do not use the RDB, they are traditional blowback. I guess this goes to something I was reading on ARFCOM about the Colt mags not allowing the BCG to function as intended in the RDB system without some modification.
It appears that only the Glock pattern .45 and 9mm, as well as 5.7, have the RDB function.
I did some more research and there are people using them with the Gibbz G9 side charging upper and New Frontier C5 lower. I may try to build a QC10 MP5 setup using the CMMG RDB components.That is what I've seem to find as well.
I did see that CMMG will sell the barrel 5" and RDB BCG separate so that one can build it on upper and lower of their choice. This would allow me to use a non-reciprocating side-charging upper to keep the gas out of my face when suppressed. What I've been trying to find out is if the LRBHO works with any other glock lower or just theirs.
I did some more research and there are people using them with the Gibbz G9 side charging upper and New Frontier C5 lower. I may try to build a QC10 MP5 setup using the CMMG RDB components.
I didn't. I really wanted to try the 9MM RDB barrel and BCG but I've been following a thread on ARFCOM of folks using them with the New Frontier MP5 mag lowers and those folks are still figuring out the logistics of getting the system to work. Issues seem to be with the BCG and certain uppers.@JRHorne did you pick up one of the CMMG BCGs? how was it?