Thread: M4, HK-416, SR-556, and now SIG-516?
View Single Post
  #12  
Old 09-15-2010, 08:38 AM
Ermac Ermac is offline
Junior Member
  
Join Date: Apr 2010
Posts: 17
Default
Are pistons a gimmick? I don't know. I don't own a Piston AR. To be fair, the army is looking to upgrade the M4's reliability and a piston is a likely choice.
Reply With Quote