AR-AK-SubGuns

CMMG

CMMG MK4 AR-15 Stripped Lower Receiver in Black - Model 55CA102-AB

Sons of Liberty Gun Works

Sons of Liberty Gun Works M4 Lower Receiver with B5 Bravo Stock and Mil-Spec Features

Colt

Colt M4 Carbine with Magpul SL Stock and 30-Round Magazine - Model LE6920MPS-B

Colt

Colt Monolithic Carbine M4 .223 Rem / 5.56 NATO with Collapsible Stock and Magpul MBUS Sights

Grey Ghost Precision

Grey Ghost Precision GGP AR-10 Heavy Receiver Set with Black Finish

Colt

Colt LE6920 Law Enforcement Carbine 5.56 NATO Rifle with Collapsible Stock and MAGPUL MBUS Sights

Colt

Colt CR6920 M4 Carbine 5.56 NATO with 16.1-inch Barrel, Black Polymer Stock and Magpul Backup Sights

Colt

Colt M4 Carbine MK4 5.56 NATO with Geissele Rail and Magpul Sights - Model LE6920-FBP2

Colt

Colt LE6920 SOCOM M4A1 Carbine with 16.1-inch Barrel and 30-Round Capacity

Geissele Automatics

Geissele Automatics Reaction Rod for 5.56/223 Caliber - Model 10-169

Wheeler

Wheeler AR Trigger Guard Tool Part Number 710907 for Easy Installation and Removal

Sig Sauer

Sig Sauer Tread Adjustable Flip-Up Sights – Model KIT-TRD-SIGHTS