LanceCriminal
15 June 2012, 09:33
I will be blunt: All of Stickman's pictures of the 12.5" Noveske with an AAC SPR/M4 can, along with other similar rifles, finally pushed me to go NFA. I have the Form 4 for the can, and the Form 1 for my lower all filled out, ready to send when I get the money orders. That means that I now really need to start figuring out what is going into the upper.
The main thing that has me hung up is whether I really need an adjustable gas system (preferably "switchable") or not. I understand that 12.5" has a nice balance in terms of dwell time, muzzle velocity, and suppressor life. What I was looking to find out is whether the switchable suppressed/unsuppressed mode gas block or receiver is functionally essential as the suppressor would likely be going back and forth between the 12.5 and my SPR upper I finally finished (which reminds me, time to resurrect an old thread). Whether I need that or not will decide much in terms of barrel, receiver, and rails. I am mostly concerned with gas blowback and overall function/cycling. The lower will have the Vltor A5 stock & buffer.
The three combinations I was considering are:
Noveske 12.5" Crusader w/pinned Switchblock
9" FSB cutout style rail system (DD, Samson Evo, Centurion, etc)
Something like johnson's rifle here but with a switchblock and SPR/M4:
http://www.weaponevolution.com/forum/showthread.php?1196-Pic-request-AAC-SPR-M4-on-12.5-quot-barrel-with-DD-9.5-FSP
or
Innovative W.A.R. receiver
BCM 12.5 SS barrel
Low-pro block
full 9" rail (new Noveske, URX III, Samson or Rainier style Evo, Centurion, etc)
OR
Get BCM 12.5", Noveske Switchblock pinned by ADCO
Vltor MUR
FSB Rails
From what I've seen, heard, read, and have at home, any of the manufacturers above will more than meet my "quality" needs. The only thing that keeps me from 100% just snatching the Noveske and caling it a day is that I usually shoot 55gr ammo to try and keep my cost/fun ratio favorable. I'm not out to shoot quarter size holes at 300 yards, but if the BCM with a 1/8 twist offers a good accuracy balance for 55gr and the occasional batches of 69/75/77gr, I'd like to go that route (not to mention the price difference). I'd also like to know if there is any risk of baffle strike using good 55gr, in any twist?
I'd appreciate personal experience with specifically 12.5" barrels and the SPR/M4, and any other regulated gas or piston systems that would allow clearance between the back of the AAC Miter Brake and still allow removal of the gas piston.
The main thing that has me hung up is whether I really need an adjustable gas system (preferably "switchable") or not. I understand that 12.5" has a nice balance in terms of dwell time, muzzle velocity, and suppressor life. What I was looking to find out is whether the switchable suppressed/unsuppressed mode gas block or receiver is functionally essential as the suppressor would likely be going back and forth between the 12.5 and my SPR upper I finally finished (which reminds me, time to resurrect an old thread). Whether I need that or not will decide much in terms of barrel, receiver, and rails. I am mostly concerned with gas blowback and overall function/cycling. The lower will have the Vltor A5 stock & buffer.
The three combinations I was considering are:
Noveske 12.5" Crusader w/pinned Switchblock
9" FSB cutout style rail system (DD, Samson Evo, Centurion, etc)
Something like johnson's rifle here but with a switchblock and SPR/M4:
http://www.weaponevolution.com/forum/showthread.php?1196-Pic-request-AAC-SPR-M4-on-12.5-quot-barrel-with-DD-9.5-FSP
or
Innovative W.A.R. receiver
BCM 12.5 SS barrel
Low-pro block
full 9" rail (new Noveske, URX III, Samson or Rainier style Evo, Centurion, etc)
OR
Get BCM 12.5", Noveske Switchblock pinned by ADCO
Vltor MUR
FSB Rails
From what I've seen, heard, read, and have at home, any of the manufacturers above will more than meet my "quality" needs. The only thing that keeps me from 100% just snatching the Noveske and caling it a day is that I usually shoot 55gr ammo to try and keep my cost/fun ratio favorable. I'm not out to shoot quarter size holes at 300 yards, but if the BCM with a 1/8 twist offers a good accuracy balance for 55gr and the occasional batches of 69/75/77gr, I'd like to go that route (not to mention the price difference). I'd also like to know if there is any risk of baffle strike using good 55gr, in any twist?
I'd appreciate personal experience with specifically 12.5" barrels and the SPR/M4, and any other regulated gas or piston systems that would allow clearance between the back of the AAC Miter Brake and still allow removal of the gas piston.