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The X4MSD transforms any carbine-length AR into a mission-ready accessory platform in under ten minutes. CNC-machined from aircraft-grade 6061-T6 aluminum and hard-anodized matte black, the two-piece handguard drops into the factory delta ring and hand-guard cap, then locks together with roll-pin friction lugs for superior zero retention.
Four true MIL-STD-1913 Picatinny rails run the full 12 o’clock, 3, 6 and 9 o’clock lines so you can mount lights, lasers, vertical grips or even an M203-pattern grenade launcher. Ventilation slots milled between the rail segments shed barrel heat, while four push-button QD sling sockets (two front, two rear) give instant ambidextrous carry options on the X4MSD-D model; the standard X4MSD includes two forward sockets.
Length: 6.9 in / 175 mm • Weight: 11.6 oz / 330 g
Finish: Type III hard-coat anodized, anti-glare
Fits: Carbine-length AR-15/M4/M16 with round or triangle hand-guard cap – no barrel nut or gas-block mods required
Accessory clearance: accepts M203, 40 mm or AirTronic launchers thanks to 1.46 in inner diameter.
