AR-15 300 AAC 14.5" Blackout Ballistic Advantage keymod tactical pistol kit

Product Code: 14.5" 300 AAC Blackout AR-15 quad tactical kit
In Stock
Price: $479.95$549.95

Available Options


Add Lower Receiver:

Add Jig:

Add Magazine:

Muzzle Device Options:

Rail System Upgrade:

Buttstock Upgrade:

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AR-15 300 AAC 14.5" Blackout Ballistic Advantage keymod tactical pistol kit, This kit contains all components to complete your AR-15 300 BLK build. The kit comes WITHOUT 80% lower receiver. All options and modifications to your kit are available on top of this page.  All components are Mil Spec and made in the USA.


Barrel: 14.5” Modern series Ballsitic/Aero Precision, match grade

Chamber: 300 AAC

Twist: 1 in 7”

Thread: 5/8x24

.750” Gas Block Diameter

Pistol Gas System

Flat top upper receiver

Forward Assist

Ejection Port Cover

A2-style Flash Hider

Echo slik keymod free float  

Bolt Carrier Group

AR-15 Charging Handle

AR-15 Mil Spec Lower Parts Kit

Mil Spec LE 6-position Black Stock

Barrel: 14.5” Modern series barrel by Ballistic Advantage with 1:7 twist, M4 Feed Ramp, 300 AAC, 4150 CMV and pistol gas system. Barrel is finished off with black anodized Echo style slim keymod in mid length and A2 flash hider.

Upper: 7075-T6 M4 upper is flat top, precision machined and hard coat anodized.  These uppers are made for us in the USA by a mil-spec manufacturer.

Bolt Carrier Group: M-16 5.56/.223 complete bolt carrier assembly, chrome lined, made from 8620 steel, Bolt is made from 9310 steel and stalked per mil spec. MPI Tested. Comes complete with cam pin, firing pin and firing pin retainer.

Lower Build Kit: Classic AR-15 lower parts kit, Mil-Spec. Includes everything you need to turn your 80% stripped lower into a complete lower.

Stock: LE (law enforcement) carbine 6-position black stock, Mil-Spec. Features quick adjust grip lever and multiple sling mounts. Completed with buffer tube assembly and spring.

Please Note: Comes unassembled. Stock phot is for informational purposes only. Does not come with sites and lower. Standard kit is DPMS compatible. Also fits perfectly with Poly (DPMS style) lowers. Because of the barrel length and various laws on states' level, we cannot assemble this kit for you. In 2014, Aero Precision had acquired Ballistic Advantage barrel manufacturers, all BA barrels are guaranteed to give sub MOA accuracy with match grade ammo.

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