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Advanced Armament Corporation AR-15 .300 AAC Blackout Complete Upper Assembly 16" Threaded Barrel URX Rail Black 101716

Advanced Armament Corporation
Ships from Warehouse 7
Typically ships within 1 to 2 business days.
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Here's a great choice if you're planning a .300 AAC Blackout build. This complete upper assembly from Advanced Armament Corporation is ready to drop onto any AR-15/M16/M4 lower with mil-spec push pin locations. It features a 16" nitrided barrel with 1:7 twist, and a Knights Armament URX rail. It is designed for use with a carbine receiver extension, standard GI buffer spring, and carbine buffer.

Specifications and Features:
.300 AAC Blackout caliber
CNC machined aircraft aluminum receiver
16" barrel, black nitride finish
1:7 twist rate
5/8-24 barrel threads
Full auto profile bolt carrier group
AAC 51T Blackout flash hider
Knights Armament URX rail

Total number of Reviews: 1

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5.0 5
"Product was in-hand pretty quickly, product was absent any aesthetic defects (scratches, etc). I ran 40 rounds of subsonic ammo through it and it performed flawlessly. I only have 3 \"issues\" with it, if you can call them that.0. The bottom of the forearm only has two small rails on it, when attaching a vertical foregrip, the closer rail is too close and the farther rail is a little too far for my comfort.1. It didn't want to drop-in on a Stag-Arms ar-15 lower. The rear lug for the pin was catching on two of the corners and not allowing the upper to go all the way down. A flat file and a couple of strokes on the sharp corners of that lug (whatever it's called) allowed it to drop in like it's supposed to.2. The AAC suppressor mount is very difficult to remove, I marred it up pretty bad trying to get it off (never did get it off).Even with these small issues, I'd still highly recommend this upper."