Receivers

FightLite

FightLite Mission Configurable Rifle Dual-Feed Upper Receiver Assembly, 5.56 NATO, 12.5" Quick-Change Barrel

FightLite

FightLite Mission Configurable Rifle Dual-Feed Upper Receiver Assembly, 5.56 NATO, 12.5" Quick-Change Barrel

FightLite

FightLite Mission Configurable Rifle Dual-Feed Upper Receiver Assembly, 5.56 NATO, 16.25" Quick-Change

FightLite

FightLite Mission Configurable Rifle, 5.56 NATO, 16.25", Black, Includes (100)-M27 Links

FightLite

FightLite Mission Configurable Rifle, 5.56 NATO, 16.25", Black, Includes (100)-M27 Links

FightLite

FightLite SCR Raider, Lower Receiver, Semi-automatic, Anodized Finish, Black, Includes Bolt Carrier (No Bolt

FMK Firearms

FMK Firearms AR-1 Lower, AR-15, Stripped, Polymer Receiver, Burnt Bronze Color

FMK Firearms

FMK Firearms AR-1 Lower, AR-15, Stripped, Polymer Receiver, Dark Earth Color

FMK Firearms

FMK Firearms AR-1, Lower, AR-15, Stripped, Polymer Receiver, Blue Jay Color

FMK Firearms

FMK Firearms AR-15 Lower, Semi-automatic, Black Finish, Polymer

FN America

FN America 15 M16 Stripped Lower Receiver 5.56x45mm Black

FN America

FN America 15 M4 Stripped Lower Receiver 5.56x45mm Black

FN America

FN America FN15 Stripped Rifle Lower .223 Rem/5.56 NATO

FN America

FN America FN15/AR 20'' Rifle Upper Receiver Assembly

FN USA

FN USA 15 Military Collector Series M16A4 Complete Upper Receiver Assembly 5.56mm 20" Barrel

Forsaken Arms

Forsaken Arms FR-11 Lower Receiver

Fortis Manufacturing, Inc.

Fortis Manufacturing , Inc. Billet M4 Upper, Stripped, Fits AR15, 223 Remington/5.56 NATO, Black Color

Fortis Manufacturing, Inc.

Fortis Manufacturing , Inc. License Gen 2 Ambidextrous, Semi-automatic, Lower/Upper Set, 223 Remington/5.56

Fortis Manufacturing, Inc.

Fortis Manufacturing , Inc. License Gen 2, Semi-automatic, Stripped Lower Receiver, 223 Remington/5.56 NATO

Forward Controls Design

Forward Controls Design AR-15 Billet Upper Receiver W/ Forward Assist Provisions