AR-15 300 AAC 16" blackout M4 classic tactical rifle kit, AR-15 Mil Spec Lower Parts Kit. This rifle kit contains all components to complete your AR-15 Rifle. The rifle 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: 16” Contour, Mag pho
Chamber: .300 AAC
Twist: 1 in 8”
Thread: 5/8-24
.750” Gas Block Diameter
Pistol Gas System*
M4 flat top upper receiver
Forward Assist
Ejection Port Cover
A2-style Flash Hider
Quadrail free float tube and nut
M16 Bolt Carrier Group
AR-15 Charging Handle
M4 6-position Black Stock
Barrel: 16” Contour Barrel with 1:8 twist (Mag Phos), .300 blackout caliber, pistol gas system.* Barrel is finished off with an anodized 10" length free float quadrail handguard* and A2 style 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 with trigger group, Mil-Spec. Includes everything you need to turn your 80% stripped lower into a complete lower.
Stock: M4 Carbine 6-position black stock, Mil-Spec. Completed with buffer tube assembly and spring.
Please Note: Comes unassembled. The kit may have variations in handguard appearance, depending on stock availability, with the same great quality.
