Originally Posted by brashier7
I have upgraded my 2012 Fenix. 12" Stiffi barrel w/.687 bore, CP shorty reg, Bob Long on/off Asa, TechT Hush Bolt, Trinity locking feed neck, Kingman rechargeable battery. It is chronoed at 290 fps at just over 300 psi,
How's that techt bolt? I've been thinking about checking it out on my 2012 fenix but one of the main advantages seemed to be that middle o-ring which the 2012 has in it's bolt already, is the shape change and other features worth it?