LWRCI PST 556 Pistol 12.7" SBA3 Brace FDE - 5.56 NATO

The LWRCI PST 556 delivers precision rifle performance in a compact pistol platform, featuring the company's proven short-stroke piston system and premium components. This 12.7-inch barreled configuration with SBA3 stabilizing brace offers enhanced maneuverability without sacrificing accuracy or reliability.

What Makes This Different

LWRCI's proprietary short-stroke piston system eliminates the fouling and heat transfer issues common in direct impingement designs. The cold hammer-forged barrel undergoes a specialized stress-relief process that maintains sub-MOA accuracy through extended firing sessions. Unlike standard AR-15 platforms, the PST series incorporates ambidextrous controls and a fully adjustable gas system for optimal performance with various ammunition weights.

Key Features

• Short-stroke piston operating system with self-regulating gas block
• 12.7-inch cold hammer-forged barrel with 1:7 twist rate
• SB Tactical SBA3 adjustable stabilizing brace in FDE finish
• Ambidextrous charging handle and magazine release
• LWRCI spiral fluted barrel for weight reduction and heat dissipation
• Modular rail system with M-LOK attachment points
• Nickel boron-coated bolt carrier group for enhanced durability

Field testing demonstrates consistent 1.5 MOA accuracy with match-grade ammunition across temperature extremes from -20°F to 140°F. The piston system maintains reliable cycling through 10,000+ round counts with minimal maintenance requirements. Competition shooters report faster follow-up shots due to reduced felt recoil and muzzle rise compared to direct impingement systems.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 12.7 inches with 1:7 twist rate
• Overall Length: 30.25-33.25 inches (brace collapsed/extended)
• Weight: 6.8 pounds unloaded
• Magazine Capacity: Accepts standard STANAG magazines
• Finish: Flat Dark Earth Cerakote
• Manufacturing: Made in USA with lifetime warranty
• Thread Pitch: 1/2x28 TPI muzzle threads

The PST 556 represents LWRCI's commitment to manufacturing excellence, incorporating lessons learned from military contracts into a civilian-legal configuration. Professional users choose this platform for its proven reliability under adverse conditions and consistent accuracy standards that exceed mil-spec requirements.