The TacFire 300 Blackout Build Kit (brand part number SSRK300LPK), a Sports South Exclusive, packages nearly every component needed to finish a .300 AAC Blackout AR-platform rifle around a 16-inch barrel finished in black nitride. The kit includes a .308-thread 5/8×24 spiral-fluted flash can with a crusher washer, a Mil-Spec steel micro/low-profile gas block sized for AR-15/.750, a steel pistol-length gas tube with pin, and an ultra-slim clamp-on M-LOK free-floating handguard. It also includes an AR-15 5.56/.223/.300 BLK stripped billet upper receiver with M4 feed ramps, a Mil-Spec aluminum charging handle with steel latch, dust cover, and forward assist, plus a full lower-end package: a Mil-Spec/commercial castle nut, an AR-15 pistol buffer tube with foam, a 3-ounce buffer with spring, a complete USA-made lower parts kit, and a standard A2-style black pistol grip.

Key Specifications

• Includes a 16-inch, .300 AAC Blackout, black nitride barrel.
• Includes a 5/8×24 spiral-fluted flash can with crusher washer.
• Includes a Mil-Spec low-profile gas block and steel pistol-length gas tube.
• Includes an ultra-slim clamp-on M-LOK free-floating handguard.
• Includes a stripped billet upper receiver with M4 feed ramps.
• Includes a Mil-Spec aluminum charging handle, dust cover, and forward assist.
• Includes a complete USA-made lower parts kit.
• Includes an AR-15 pistol buffer tube with foam and a 3-ounce buffer.
• Includes an AR-15 standard receiver end plate and Mil-Spec/commercial castle nut.
• A Sports South Exclusive build kit.

Frequently Asked Questions

Does this kit include a stripped lower receiver? No, the kit provides nearly every other component for a .300 Blackout build; the stripped lower is sourced separately.

What caliber is this build kit for? .300 AAC Blackout.

Buy the TacFire 300 Blackout Build Kit

Source almost everything you need for a .300 Blackout AR build in one kit. Order it from our TacFire lineup of AR-15 build kits for fast, reliable shipping from our Lubbock, Texas gun shop.