Our .17 HMR is offered standard with an 18" stainless, button-rifled, 1:10
twist barrel with straight flutes, muzzle threaded 1/2-28RH for standard
.223/5.56 muzzle devices, with a six vent A1 flash hider included. Standard hand
guard is our G10 composite, non-vented, mid-length, free-float tube. Upper
includes the lower conversion parts kit and two 10-round magazines.