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B5 Systems Modular Picatinny Stock Coyote Brown MPS-1555 UPC 814927023628
Product Description
The B5 Systems Modular Picatinny Stock (MPS-1555) in Coyote Brown is an advanced shoulder stock interface engineered for firearms featuring rear MIL-STD-1913 Picatinny receiver rails. Designed for modern subgun, PCC, and compact carbine platforms, this stock delivers an exceptional cheek weld, high structural rigidity, and streamlined ergonomics without the mass or complexity of legacy buffer tube assemblies.
Precision-machined from high-strength aluminum and impact-resistant polymer components, the Modular Picatinny Stock mounts securely to any standard rear 1913 rail interface. The low-profile clamping system utilizes a heavy-duty cross-bolt to lock firmly onto rail teeth, ensuring zero axial movement, play, or chatter under rapid firing cycles or field drop impacts. Its earth-tone Coyote Brown finish matches standard military and tactical color schemes while providing a non-reflective, durable protective layer against wear and environmental exposure.
Engineered for tactical versatility, the stock incorporates integrated steel quick-detach (QD) sling swivel sockets with limited rotation, allowing ambidextrous sling placement without strap tangling. The slip-resistant rubber buttpad absorbs recoil impulse while maintaining positive shoulder traction across body armor, chest rigs, and wet weather gear. Lightweight and rugged, the B5 MPS-1555 offers a streamlined solution for custom bufferless rifle and pistol-caliber carbine builds.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Direct mounting compatibility with standard MIL-STD-1913 Picatinny rear stock adapters, receiver endplates, and bufferless platforms (e.g., SIG MCX/MPX, Ruger LC Carbine, CZ Scorpion with 1913 endplate, BRN-180, and AK platforms with rear Picatinny rail adapters).
- Inspect the host firearm's rear 1913 Picatinny rail for dirt, burrs, or solvent residue, cleaning the rail teeth thoroughly.
- Loosen the cross-bolt clamp on the B5 stock assembly using the appropriate hex/Torx tool until the rail jaws open sufficiently to clear the receiver rail.
- Align the stock's internal recoil lug with a cross-slot on the host rail at the desired height setting, pressing the stock clamp flush against the rail face.
- Torque the mounting clamp cross-bolt to manufacturer specification (typically 30–35 in-lbs) and apply threadlocker (Blue 242/243) to prevent loosening under heavy vibration.
Key Features
- 1913 Rail Interface: Clamps securely onto any MIL-STD-1913 Picatinny rear rail section for bufferless firearm setups.
- Optimized Cheek Weld: Ergonomic top contour provides comfortable, consistent cheek placement for optic alignment.
- Integrated QD Sockets: Ambidextrous steel quick-detach sling swivel mounts with rotation limiters prevent sling twisting.
- Non-Slip Rubber Buttpad: Textured rubber pad secures shoulder positioning and dampens felt recoil.
- Rugged Hybrid Construction: Machined aluminum clamp combined with heavy-duty polymer body for maximum durability at minimal weight.
- Coyote Brown Finish: Tactical non-reflective finish blends seamlessly with FDE, Coyote, and desert camouflage staging schemes.
Product Specifications
- Brand: B5 Systems
- Model/Series: Modular Picatinny Stock (MPS)
- MPN / SKU: MPS-1555
- UPC: 814927023628
- Platform Fitment: MIL-STD-1913 Picatinny Rear Stock Adapter / Rail
- Material: Aircraft-Grade Aluminum Clamp / High-Strength Polymer Body
- Finish/Color: Coyote Brown
- Country of Origin: United States
