Geissele Rifle Length Spring 42 in for AR-15/M-16 04-308-F. This unique spring design uses three independent strands of wire that acts as a harmonic damper and energy absorber by allowing the springs to flex separately from each other. This flex...
Geissele Rifle Length Spring 42 in for AR-15/M-16 04-308-F. This unique spring design uses three independent strands of wire that acts as a harmonic damper and energy absorber by allowing the springs to flex separately from each other. This flex...