Alexander Arm's .17 HMR rifle features a standard 18" stainless steel, button-rifled 1:10 twist barrel with straight flutes, muzzle threaded 1/2-28 TPI RH for standard .223/5.56 muzzle devices, with a six vent A1 flash hider included. The weapon features a blowback operating system. The standard trigger is a military-style AR-15 trigger. The rifle ships in a soft carry bag with two 10-round magazines. Weight of rifle is 7.5 pounds. Features18" button-rifled, fluted, stainless barrelA1 Flash HiderCollapsible StockMilitary-style triggerSoft Carry CaseTwo 10-Round Magazines