DPMS DPM4-FSB M4 AR-15 Rifle 5.56 NATO 16″ Barrel with Magpul MBUS Rear Sight – Black

The DPMS DPM4-FSB is a mil-spec AR-15 carbine built to perform right out of the box. Chambered in 5.56 NATO and featuring a 16-inch nitride-coated Chrome Moly Vanadium M4-profile barrel with a 1/7″ twist rate and carbine-length gas system, this rifle delivers reliable cycling and dependable accuracy. The barrel is capped with an A2-style flash hider and fitted with an F-marked front sight base, while a Magpul MBUS rear backup sight rounds out the sighting package.

The forged 7075-T6 A3 upper receiver is machined to MIL-SPEC standards and hard coat anodized for maximum durability. It includes a forward assist and dust cover, and is paired with a matching forged 7075-T6 lower receiver marked “MULTI” for caliber flexibility. The full-auto profile bolt carrier group features a shot-peened Carpenter No. 158® steel bolt, a gas key hardened to USGI specifications, and Grade 8 staked screws — all mil-spec through and through.

The fire control group is equipped with a DPMS Panther Polished Trigger (PPT) for a cleaner, more consistent pull. The mil-spec diameter carbine buffer tube offers 6 adjustment positions and is fitted with a DPMS M4 carbine stock, while the standard M4 handguard with heat shields keeps the rifle cool and comfortable during extended use.

**Key Specifications:**
– **Caliber:** 5.56 NATO
– **Barrel Length:** 16 inches
– **Barrel Steel:** Chrome Moly Vanadium, Nitride Finish
– **Twist Rate:** 1 in 7″
– **Gas System:** Carbine-Length
– **Muzzle Device:** A2-Style Flash Hider
– **Muzzle Thread:** 1/2″ x 28
– **Upper/Lower:** Forged 7075-T6 Aluminum, Hard Coat Anodized
– **Bolt:** Carpenter 158 Steel, Full-Auto Profile BCG
– **Trigger:** DPMS Panther Polished Trigger (PPT)
– **Stock:** M4-Style Carbine, 6-Position Adjustable
– **Handguard:** M4 with Heat Shields
– **Backup Sight:** Magpul MBUS Rear Sight (Black)
– **Overall Length:** 32 inches
– **Weight:** 6.8 lbs
– **Capacity:** 30-Round Magazine Included

Whether you’re a first-time AR-15 buyer or an experienced shooter looking for a dependable mil-spec carbine at a competitive price, the DPMS DPM4-FSB delivers serious value. Order online today at VanTon Arms and enjoy fast nationwide shipping on one of the most trusted names in the AR platform.