The HM DEFENSE HMP15FMB556C RaiderMC556 is a compact AR-style pistol configured for maneuverability and modularity. It features a threaded, match-grade Monobloc barrel with an integrally machined gas block, an 8.50″ free-floating Picatinny rail, and forged aluminum upper and lower receivers. The pistol ships with an M16 bolt carrier group, charging handle, buffer tube and spring, plus magazine, and includes an adjustable Close Quarter (CBQ) stock and enhanced grip for control.
Key Specifications
- The barrel measures 9.50 inches for compact handling.
- Chambered in .223 Rem / 5.56 NATO.
- Magazine capacity is 30 + 1.
- The overall weight is 5.50 lbs.
- Equipped with an 8.50 inch free-floating Picatinny rail.
- Barrel features a threaded, match-grade Monobloc design with integral gas block.
- Receivers are forged aluminum for strength and durability.
- Includes an M16 bolt carrier group with charging handle and buffer tube/spring.
- Stock material/finish is synthetic, black with an adjustable Close Quarter (CBQ) design.
- Grip is black polymer for secure handling.
The RaiderMC556 delivers a short-barrel AR platform with match-grade components and a compact profile suited to close-quarters applications where maneuverability and accessory compatibility matter. Its combination of a Monobloc threaded barrel, extended free-floating rail, and forged receivers makes it a capable option for shooters seeking a durable, highly configurable AR-style pistol platform.





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