Nov 7, 2009 L lostranger Marksman Joined Jul 23, 2009 Messages 44 Reaction score 0 Location Lawton Nov 7, 2009 #1 I am in the process of doing an OD Piston conversion on an M4. Anybody done this and/or put some rounds thru one? Any feedback you'd like to share?
I am in the process of doing an OD Piston conversion on an M4. Anybody done this and/or put some rounds thru one? Any feedback you'd like to share?