This SBR Ready full build kit provides all components needed to complete a 300 BLK AR-15 build except the lower receiver. It includes an 8.5 inch barrel with pistol gas system, 7 inch M-Lok freefloat handguard, complete bolt carrier group, charging handle, buffer system, and lower parts kit. The upper receiver is forged 7075-T6 aluminum with anodized finish. The barrel is 4150 Chrome Moly Vanadium with parkerized finish, 1 in 8 twist rate, and 5/8x24 threads.
This kit ships without a brace and is intended for customers selecting their own final setup. The configuration allows for stock installation once compliance requirements are met. The buffer system is included for complete lower assembly.
This kit includes the upper assembly, bolt carrier group, charging handle, buffer tube assembly with buffer and spring, and lower parts kit. All components required to complete an AR-15 build are provided except the lower receiver and stock or brace.
The 8.5 inch heavy profile barrel features a parkerized finish for corrosion resistance and surface hardness. The pistol gas system is matched to the barrel length. The 0.75 inch gas block sits under the handguard for a clean profile. The barrel features 5/8x24 threads with an included birdcage flash hider.
The 9310 alloy steel bolt carrier group features a nitride finish for enhanced corrosion resistance and reduced friction. The BCG is paired with a Mil-Spec AR-15 charging handle for complete upper functionality. The M-Lok handguard provides attachment slots for modular accessory placement with freefloat design.
Lower receiver not included. Ships without a brace. Do not install a stock unless compliant with applicable laws. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.
Barrel: 8.5" .300 Blackout AR-15 Heavy Barrel, Pistol Gas, 1:8T, 5/8x24
Caliber: .300 Blackout
Barrel Length: 8.5"
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Finish: Parkerized
Barrel Profile: Heavy (HBAR)
Barrel Twist Rate: 1:8
Barrel Thread Pitch: 5/8x24
Gas System: Pistol
Gas Block Size: 0.75
Handguard Material: 6061-T6 Aluminum
Handguard Length: 7-inch
Handguard Color: Black
Handguard Style: M-Lok
Upper Receiver: AR-15 Upper Receiver, M4 Feed ramps, 7075 T6 Aluminum, Anodized
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Anodized
Charging Handle: AR-15 M4 Charging Handle Mil-Spec Quality
Bolt Carrier Group: AR-15 5.56/.223/.300/.350 Complete Bolt Carrier Group
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Muzzle Device: AR-15/AR-10 .308 5/8x24 TPI GI Birdcage Flash Hider
Muzzle Thread Pitch: 5/8x24
Buffer Tube Kit: Mil-Spec Heavy-Duty AR-15 6-Position Buffer Tube ONLY (No Other Parts)
Buffer Material: Aluminum
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