With its 16 inches 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. The adjustable gas block allows the user to tune the rifle for their preferred ammunition and/or suppressor use. Like all tactical series rifles, it comes standard with Magpul MBUS flip-up sights. Front sight base - full-length MIL-STD 1913 rail section Match Grade Barrel MLOK attachment Raptor ambidextrous charging handle Includes - (1) 30 round Magpul PMAG, Magpul MBUS Forged flat-top with MIL-STD 1913 rail, 7075 T6 aluminum upper receiver Forged 7075 T6 aluminum lower receiver