Troy SPST-CA4-10BT-19 A4 Pistol | 5.56 | 10.5in

The Troy Industries A4 pistol is a compact AR-platform pistol built around a 10.5-inch barrel and chambered for 5.56 NATO. It combines a free-float TROY SOCC92 M-LOK handguard with an SBA3 pistol brace, folding front and rear BattleSights, and a TROY Medieval muzzle brake for controlled handling. For a close-quarters optic that pairs well with this platform, consider the Holosun HS503CU — a robust, sub-$1,000 red dot suitable for fast target acquisition. Typical applications include precision range training and practical/competition shooting where a compact, maneuverable AR-style pistol is desirable.

Product Specifications

• The manufacturer is Troy Industries.
• The model and part number are SPST-CA4-10BT-19.
• The caliber is listed as .223 Rem / 5.56 NATO.
• The action is Semi-Automatic.
• The barrel measures 10.5 inches.
• The operating system is Gas Operated.
• The handguard is the TROY SOCC92 BattleRail (9.25 inches).
• The pistol is fitted with an SBA3 Pistol Brace.
• The package includes a TROY BattleMag® magazine.
• The iron sights are TROY Folding Front and Rear BattleSights™.
• The muzzle device is a TROY Medieval® Muzzle Brake.
• The rifling is 1 turn in 7 inches, right-hand twist.
• The trigger is a TROY Standard Trigger.
• The receiver material is Aircraft Grade 6061-T6 Aluminum.
• The UPC is 812441028129.

This A4 pistol is configured for operators and enthusiasts who want a compact AR-platform tool with proven Troy components. The SOCC92 handguard provides modular M-LOK attachment points for lights and accessories while the SBA3 brace offers a stable control option for one-handed and shouldered positions. Overall, the build is straightforward and purpose-driven—well suited to focused range sessions and competitive stages where a short-barreled AR pistol offers handling advantages without unnecessary complexity.