This .300 Blackout Rifle Kit steps up to a 10″ free-float aluminum quad rail for a longer sight radius and improved accuracy over the shorter handguard options. The heavy chrome moly barrel is phosphate processed and paired with a pistol-length gas system.
- Chamber – .300 AAC Blackout
- Twist – 1 x 8
- Barrel Thread – 5/8″ x 24
- Barrel Steel – Heavy Chrome Moly, Phosphate Processed
- Flash Hider – A2 Flash Hider
- Gas System – Pistol-Length, .750″ Low Profile Gas Block
- Handguard – 10″ Free Float Aluminum Quad Rail
- Upper Receiver – M4 Flat-Top w/ Feed Ramps
- Bolt Carrier Group – Mil-Spec AR-15 BCG
- Charging Handle – Included
- Lower Parts Kit – Mil-Spec LPK
- Stock – US-Made 6-Position Black Stock w/ Buffer & Spring
- Origin – Made in the USA
What’s Included: Assembled M4 flat-top upper, mil-spec BCG, charging handle, mil-spec lower parts kit, and 6-position stock. Lower receiver is NOT included — pair it with any AR-15 80% lower, and this kit ships as a non-FFL item.
Browse more setups in our .300 Blackout rifle build kits collection, or grab a matching 80% lower receiver to complete the build.
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