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Begin your build by adding a part below. Your progress will be saved automatically. Utilize the convenient filters to quickly locate the parts you need. Access your saved builds or start a new build from your Buildlist page. Don't see the part you want for your custom build? Request it through our Request A Part form.

Griffin Enhanced Mil Spec BCG

$139.95

Geissele Black Super Duty Upper Receiver

$140.00

Geissele Reliability Enhanced Bolt Carrier

$148.00

SOLGW M4 Upper Receiver

$149.99

CMT Tactical HDM 11.5" Rail

$150.99
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Min: $8.00 Max: $550.00
$8 $550