The Alexander Arms R300ST Standard is a modern sporting rifle chambered in .300 AAC Blackout. It is built on a black anodized receiver and fitted with an Adaptive Tactical EFX synthetic stock and black polymer grip. The rifle ships configured optics-ready and includes a 30-round detachable magazine.
Key Specifications
- The manufacturer is Alexander Arms.
- The model is listed as R300ST Standard.
- The caliber is .300 AAC Blackout.
- The barrel measures 16 inches.
- The magazine capacity is 30 rounds.
- The action is Semi-Automatic.
- The metal finish is Anodized (black).
- The stock is an Adaptive Tactical EFX synthetic stock in black.
- The handguard is M-LOK.
- The muzzle device is an A2 flash hider.
Built to accept common optics and accessories, the R300ST provides a practical .300 AAC Blackout platform for range use, precision shooting, and hunting. Its combination of a 16-inch barrel, generous magazine capacity, M-LOK handguard and adaptive stock make it a versatile foundation for shooters who prefer a durable, configurable modern sporting rifle.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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