KNIGHTS ARMAMENT SR-15 CQB 11.5 UPPER OPTIONS

Right before we focus on the merits and/or cons of both of the above mentioned methods of operation, we have to examine The purpose that some usually do not even concur the M16 series operates by way of "immediate fuel impingement.* These possess the standard black e3 bolt and upper receiver as pictured.  Based on Knight's the updated version of t