Action: Semi-Auto - Caliber: 5.56 NATO - Capacity: 30rd - Barrel: 16 (1:7) Chrome Lined/Chrom Moly Vanadium with Flash Hiding Compensator - Sights: Magpul Flip-Up - Receiver Upper: Aluminum Black - Receiver Lower: Aluminum Black - Stock: Magpul STR Black - Grip: Black - Trigger: Two-Stage Precision - Length: 33.3-36.6 - Weight: 7 lbs. - With its 16-in. chrome lined / chrome moly barrel at the heart of its design the M15TAC16 blends rugged durability with exacting precision. The Tactical handguard's slim octagonal profile sports a full length MIL-STD 1913 12 O'Clock rail for sights and accessories. - Included with Rifle: (1) 30rd Magpul PMAG