The Ruger® AR-556® MPR is a distinct combination of Ruger® innovation and Magpul furniture. The AR-556® MPR features a 15" Free Float M-LOK compatible hand guard along with a Magpul MOE SL Stock and MOE SL Pistol Grip. The barrel is an 18" 4140 Chrome-moly steel barrel which has been cold hammer forged and features a 1:8" right hand twist rate. Additional this rifle features a rifle length gas system along with a pair of forged 7075-T6 aluminum upper/lower receivers. The Ruger® AR-556® MPR provides you with an exceptional value that can't be overlooked. All backed by an amazing Ruger® warranty which is second to none in the industry.