TacFire SSRK300LPK AR Build Kit .300 Blackout 16-inch

The TacFire SSRK300LPK is an AR-platform build kit centered on a .300 AAC Blackout 16-inch black nitride barrel and designed to provide builders with a comprehensive set of components. The kit includes an ultra-slim clamp-on M-LOK free-floating handguard, a stripped billet upper receiver with M4 feed ramps, and a selection of mil-spec hardware. It bundles upper- and lower-related parts to simplify a straightforward build for range use, field applications, or custom AR projects.

Key Specifications

• The caliber is .300 AAC Blackout.
• The barrel measures 16 inches.
• The barrel finish is Black Nitride.
• The handguard is an ultra slim clamp-on M-LOK free-floating design.
• The upper is a stripped billet receiver with M4 feed ramps.
• The kit includes a pistol-length gas tube with pin.
• The charging handle is a Mil‑Spec aluminum unit with a steel latch.
• The kit ships with an AR15 USA made lower parts kit.
• The buffer system includes an AR15 pistol buffer tube with foam, a 3 oz buffer, and spring.
• The action type is Semi-Auto.

This kit provides a cohesive collection of components for builders who want a practical, parts-complete foundation for a .300 AAC Blackout AR build. With a nitride-treated barrel, free-floating M-LOK handguard, and mil-spec control components, it supports common range and field uses while giving a clear starting point for customization and assembly.