AT3 Barrel Builder Kit – 7.5″ .300 Blackout Medium Profile Pistol Length Barrel, Gas Block, Gas Tube & BCG

AT3 Barrel Builder Kit – 7.5 Inch .300 Blackout Barrel, Gas Block, Gas Tube, and BCG

Features

• Includes the barrel, gas system, and bolt carrier group for a 7.5 inch .300 Blackout AR-15 upper build
• Built around an AT3 7.5 inch .300 Blackout medium profile barrel with a pistol-length gas system
• Includes a low-profile .750 steel gas block, pistol-length stainless gas tube, and two gas tube roll pins
• Includes a complete AT3 black nitride bolt carrier group for 5.56 NATO and .300 Blackout
• Useful for compact .300 Blackout upper builds where short overall length is the priority

The AT3 Barrel Builder Kit gives you the core parts for building out the barrel, gas system, and BCG side of a compact .300 Blackout AR-15 upper. This kit pairs a 7.5 inch medium profile barrel with a pistol-length gas system, low-profile gas block, two gas tube roll pins, and a complete black nitride BCG.

Note: This kit is not assembled. Upper receiver, handguard, charging handle, muzzle device, and small installation tools are not included.

Specifications

• Brand: AT3 Tactical
• Model: Barrel Builder Kit – 7.5 Inch .300 Blackout Pistol-Length with BCG
• MPN: AT3-BBKIT-75-300BLK-MED-PIS-GB-GT-BCG
• Platform: AR-15
• Caliber: .300 Blackout
• Barrel Length: 7.5 inches
• Barrel Profile: Medium
• Gas System Length: Pistol
• Gas Block Journal: .750 inch
• BCG Finish: Black Nitride

What’s Included

• 1x AT3 .300 Blackout Medium Profile 7.5 Inch AR-15 Barrel
• 1x AT3 Low Profile Micro Steel AR-15 Gas Block – .750
• 1x AT3 AR-15 Gas Tube – Stainless – Pistol
• 1x AT3 AR-15 Bolt Carrier Group – 5.56 NATO/.300 Blackout – Black Nitride
• 2x AT3 AR-15 Gas Tube Roll Pin