TacFire .300 Blackout AR-15 Upper Receiver Build KIT With Bolt Carrier Group - 7.5"
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TacFire
Overview
The TacFire .300 Blackout AR-15 Upper Receiver Build Kit features a 7.5-inch barrel designed specifically for the .300 Blackout caliber, making it ideal for those looking to create a compact and versatile firearm. With a pistol gas system length, this upper receiver is optimized for reliable cycling in short-barreled applications, providing a balance of performance and maneuverability. This kit is commonly used in builds that prioritize close-quarters engagement and suppressed shooting scenarios.
Specifications
TacFire .300 Blackout AR-15 Upper Receiver Build KIT With Bolt Carrier Group - 7.5"
Available Merchants(1)
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Build history on GunPartPicker
Builders on GunPartPicker first added the TacFire .300 Blackout AR-15 Upper Receiver Build KIT With Bolt Carrier Group - 7.5" to a build in February 2026. Builds with this upper receiver are nearly all chambered in 300 Blackout, nearly all on pistol-length gas, and nearly all AR-15.
Today the one retailer we track is out of stock. Listed prices start at $309.99 at Primary Arms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
Blem PSA AR-15 Stripped American Flag Lower
Superlative Arms Bleed Off Adjustable Gas Block Set Screw .875" - Titanium - DLC Grey Finish
Bravo Company Mfg M-LOK 15" Modular Rail, Black - MCMR15556BLK
Radian Raptor Slim Line Ambidextrous AR-15 Charging Handle - Tungsten
PSA PA10 .308 Bolt Catch - 503661
Aero Precision M16 / AR-15 Bolt Carrier Group - Black Nitride - No Logo
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