Windham Weaponry 7.62×39mm rifles in SFS (Shaved Front Sight) and MPC (M4 Pattern Carbine) configurations combine the hard-hitting terminal ballistics of the 7.62×39 cartridge with the familiar ergonomics, lightweight modularity, and controls of the AR-15 platform.

Key Specifications

• Chambering: 7.62×39mm Soviet.

• Barrels: 4150M Chrome Moly Vanadium steel, chrome-lined for superior heat and corrosion resistance.

• Twist Rate: 1:9.5″ right-hand twist, engineered to stabilize standard 122gr–124gr FMJ and hunting loads.

• Receivers: Forged 7075-T6 aircraft-grade aluminum with hardcoat black anodized finish.

• Feed System: Specially modified M4 feed ramps paired with an enhanced firing pin to reliably cycle steel- or brass-cased ammunition from 7.62×39 AR magazines.

Featured Configurations

• 14.5-Inch SFS / MPC Configuration:

  • Barrel: 14.5-inch M4-profile, chrome-lined barrel (with a pinned and welded extended flash suppressor to satisfy the legal 16-inch overall rifle length).

  • Features: Available in either an SFS setup (low-profile shaved gas block with free-float handguard) or a classic MPC layout (A2 front sight tower with removable carry handle/rear sight) and a 6-position telescoping buttstock. Built for high maneuverability and tight-quarters handling.

• 16-Inch SFS / MPC Configuration:

  • Barrel: 16-inch M4-contour, chrome-lined barrel with A2 flash hider.

  • Features: MPC models offer the traditional M4 look with double-heatshield handguards, an A2 front sight, and an A4 removable carry handle. SFS models feature a shaved front sight block inside a free-float handguard for an uninterrupted, flat-top Picatinny rail. Maximizes 7.62×39mm velocity while maintaining full optics versatility.

Highlights

• Hard-Hitting Stopping Power: Delivers AK-47-level terminal energy while preserving AR-15 accuracy, ergonomics, and modularity.

• Optic & Iron Sight Options: Choose between classic military iron-sight styling (MPC) or a completely clear continuous top rail for red dots and scopes (SFS)