Upper Receivers

Browse AR-15 and AR-10 upper receivers to complete or upgrade your rifle build. Featuring quality, precision-machined options from trusted brands for reliable performance.

Sig Sauer MCX Spear LT AR Conversion Kit, 7.62x39, 11.5" BBL, Black

$ 2,070.99

SIG UPPER ASSY, SIGMCX, 7.62X39, 16IN, AR CONVERSION KIT, SPEAR LT, BLK

$ 2,070.99

H&K MR556 A4 Upper Receiver Kit, 5.56mm, 11"

$ 2,499.00

Sig Sauer MCX 5.56mm 16" Upper Receiver

$ 1,364.00

Sig Sauer APP Only M400 PRO Complete Upper, 5.56 NATO, 16" BBL

$ 742.00

Alexander Arms Complete Upper Receiver - 16" Threaded - 6.5 Grendel

$ 1,040.99

Sig Sauer MCX Spear LT Upper Receiver Assembly Black

$ 599.00

CMMG Resolute Mk4 Upper Group, 5.56mm, 16.1", No BCG/CH

$ 499.99

H&K MR762 A4 Upper Receiver Kit, .308 Win, 13″

$ 2,999.00

Sig Sauer SIGM400 Upper Receiver, 5.56 NATO, 11.5" BBL

$ 820.00

Sig Sauer MCX LT Upper Receiver, 7.62x39mm, 16" w/ Folding Knuckle & M4 Adapter

$ 1,749.00

Sig Sauer MCX Spear LT Upper Receiver AR15 Conversion Kit, 7.62x39, 11.5"

$ 1,699.00

H&K MR556 A4 Upper Receiver Kit, 5.56mm, 16.5″

$ 2,499.00

H&K MR762 A4 Upper Receiver Kit, 7.62mm NATO, 16"

$ 2,999.00