Lower Parts
Build or upgrade your rifle with quality AR-15 lower parts from Gas & Brass Armory in Brandon, FL. We offer complete lower parts kits (LPKs), individual components, upgraded triggers, buffer retainers, takedown pins, and more. Whether you’re doing a full lower build or fine-tuning your trigger and controls, we carry reliable parts from Aero Precision, CMC, Rise Armament, and other trusted brands. Everything you need to finish your lower, all in one place.
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FORTIS K2 ENHANCD AR15 END PLATE GRY
Fortis Manufacturing Inc.
MSRP: $59.78$43.00When designing their new Lightweight Enhanced (LE) Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With two lockdown systems (K1 & K2), Fortis has engineered a...MSRP: $59.78$43.00 -
FORTIS K1 ENHANCD AR15 END PLATE FDE
Fortis Manufacturing Inc.
MSRP: $53.13$38.00When designing their new Lightweight Enhanced (LE) Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With two lockdown systems (K1 & K2), Fortis has engineered a...MSRP: $53.13$38.00 -
FORTIS K1 ENHANCD AR15 END PLATE GRY
Fortis Manufacturing Inc.
MSRP: $53.13$38.00When designing their new Lightweight Enhanced (LE) Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With two lockdown systems (K1 & K2), Fortis has engineered a...MSRP: $53.13$38.00 -
FORTIS K2 ENHANCD AR15 END PLATE FDE
Fortis Manufacturing Inc.
MSRP: $59.78$43.00When designing their new Lightweight Enhanced (LE) Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With two lockdown systems (K1 & K2), Fortis has engineered a...MSRP: $59.78$43.00 -
FORTIS END PLATE & CASTLE NUT
Fortis Manufacturing Inc.
MSRP: $32.84$20.00The Fortis Standard Castle Nut is manufactured from a solid piece of billet aircraft grade aluminum that offers a significant weight reduction to your castle nut. If you're trying to save ounces, this is a great way, but without sacrificing durability...MSRP: $32.84$20.00 -
FORTIS STANDARD CASTLE NUT
Fortis Manufacturing Inc.
MSRP: $18.73$12.00The Fortis Standard Castle Nut is manufactured from a solid piece of billet aircraft grade aluminum that offers a significant weight reduction to your castle nut. If you're trying to save ounces, this is a great way, but without sacrificing durability...MSRP: $18.73$12.00 -
DBST FIELD REPAIR KIT
Doublestar Corp.
MSRP: $64.39$46.00The field repair kit was designed to provide the most commonly worn or broken parts in your semi auto AR15. It's a great addition to your range bag! All parts are high quality.MANUFACTURER: Doublestar Corp.MPN: AR785MODEL: 0Description: Repair Kit...MSRP: $64.39$46.00 -
DBST OOPS! REPLACEMENT KIT
Doublestar Corp.
MSRP: $24.73$15.00Sometimes parts go missing or need replacement. Don't be caught unprepared with a useless rifle and stand ready with the Double Star Oops! Kit. The kit fits easily in your range bag, backpack, and even in your pocket. Never say Oops! with the Double Star...MSRP: $24.73$15.00 -
COLT FIELD REPAIR KIT M4/AR15
Colt's Manufacturing
MSRP: $54.74$40.00Prepare your AR15/M4 for anything with the Colt's Manufacturing Field Repair Kit-an essential collection of mil-spec replacement parts designed to keep your rifle running in peak condition. Whether you're facing worn components after extended range time...MSRP: $54.74$40.00 -
COLT HIGH WEAR PARTS KIT M4/AR15
Colt's Manufacturing
MSRP: $37.24$27.00COLT HIGH WEAR PARTS KIT M4/AR15MANUFACTURER: Colt's ManufacturingMPN: SPK403980MODEL: High Wear Parts Repair KitType: KitColor: BlackMSRP: $37.24$27.00 -
CMMG PARTS KIT AR15 BOLT CATCH
CMMG
MSRP: $17.33$11.00High quality components and precise manufacturing make CMMG parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.MANUFACTURER: CMMGMPN:...MSRP: $17.33$11.00 -
CMMG AR15 END PLATE AMBI SLING POINT
CMMG
MSRP: $12.08$8.00Since 2002 CMMG has been the leading manufacturer of AR-15 rifles, AR-10 rifles, and trailblazing AR technologies. CMMG offers premium AR-15 and AR-10 rifles, parts, and accessories.MANUFACTURER: CMMGMPN: 55CA9ACMODEL: Receiver End PlateColor: BlackMSRP: $12.08$8.00