Unassembled AR Rifle Upper Build Kits

These kits include everything needed to assemble a 16″ 5.56 NATO rifle-length upper — stripped Cerakote upper receiver, 16″ 4150 phosphate barrel with 1:7 twist, free-floating handguard (KeyMod or M-LOK), carbine-length gas system, A2 flash hider with crush washer, mil-spec dust cover, and forward assist. Bolt carrier group and charging handle are not included; both are available as add-on options on each product page. Available in multiple Cerakote colors.

AR Rifle Upper Build Kits

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Full-Length Upper, Your Assembly

Each rifle kit ships fully disassembled with a 16" 4150 steel barrel in M4 contour, Cerakote-finished mil-spec upper receiver, free-floating M-LOK or KeyMod handguard with barrel nut and mounting hardware, carbine-length gas tube and low-profile pinned gas block, A2 flash hider with crush washer, mil-spec dust cover with door hardware, and mil-spec forward assist with roll pin. Bolt carrier group and charging handle are sold separately — add-on options are available on each product page.