FAMILY:AR-556 Rifle Series MODEL:AR-556 MPR TYPE:Rifle ACTION:Semi-Auto FINISH:Black Hard Coat Anodized STOCK/FRAME:Collapsible / Folding Stock STOCK/GRIPS:Six-Position Telescoping SPC FEATURE:Threaded Barrel Model WEIGHT:6.8 lbs. CALIBER/GAUGE:223 Rem | 5.56 NATO CAPACITY:30+1 # OF MAGS:1 MAGAZINE DESC:30 rd. Magpul PMAG BARREL:18" OVERALL LENGTH:35" - 38.25" RATE-OF-TWIST:1-in-8" SIGHTS:No Sights ADDL INFO:15" Free Float M-LOK Handguard ADDL INFO:Ruger Elite 452 AR-Trigger ADDL INFO:Ergonomic MAGUL Furniture