• Get 25% Off Access To Frank's Online Training

    Use code FRIDAY25 and SATURDAY25 to get 25% off access to Frank’s online training. Want a better deal? Subscribe to get 50% off.

    Get Access Subscribe

please delete

Re: want to build a m4 should i go gas piston?

well.. let me ask you this? what is your budget?? what is the "m4" going to be used for? plinking? target shooting? comps? home defense?

as for the benefits.. you can do a search, on here and find out that info..