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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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 -
CMMG AR15 BUFFER TUBE CASTLE NUT
CMMG
MSRP: $15.02$10.00Since 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: 55CA9CBMODEL: Receiver Extension NutFinish:...MSRP: $15.02$10.00 -
CMMG 9MM EJECTION PORT COVER KIT
CMMG
MSRP: $24.59$15.00Includes ejection port cover, rod, brass deflector, and spring.MANUFACTURER: CMMGMPN: 22BA627MODEL: 0Type: KitMSRP: $24.59$15.00 -
CMMG EJECTION PORT COVER KIT
CMMG
MSRP: $16.65$10.00Includes ejection port cover, rod, and spring.MANUFACTURER: CMMGMPN: 55BA6E3MODEL: 0Description: Ejection Port Cover KitType: KitMSRP: $16.65$10.00 -
CMMG FORWARD ASSIST KIT
CMMG
MSRP: $29.78$17.00Includes forward assist assembly, spring, and installation pin.MANUFACTURER: CMMGMPN: 55BA556MODEL: 0Type: KitColor: BlackMSRP: $29.78$17.00 -
CMMG PART KIT AR15 BOLT REHAB
CMMG
MSRP: $44.58$30.00Kit for repairing your Bolt/BCG. All Parts Meet or Exceed Mil-Spec.MANUFACTURER: CMMGMPN: 55AFF68MODEL: 0Description: Parts KitType: KitMSRP: $44.58$30.00 -
CMMG AR-15 PARTS KIT FIELD REPAIR
CMMG
MSRP: $43.86$30.00The Enhanced Field Repair Kit includes parts that all meet or exceed Mil-Spec.MANUFACTURER: CMMGMPN: 55AFF62MODEL: 0Description: Enhanced Field Repair Parts KitType: KitMSRP: $43.86$30.00 -
CMMG PARTS KIT AR15 UPPER PINS/SPRNG
CMMG
MSRP: $23.35$13.00Parts Kit, AR15, Upper Pins and Springs. All Parts Meet or Exceed Mil-Spec.MANUFACTURER: CMMGMPN: 55AFF2FMODEL: 0Type: KitMSRP: $23.35$13.00 -
CMMG PART KIT AR15 LOWER PINS/SPRING
CMMG
MSRP: $23.93$15.00Parts Kit, AR15, Lower Pins and Springs. All Parts Meet or Exceed Mil-Spec.MANUFACTURER: CMMGMPN: 55AFF75MODEL: ARDescription: Lower Spring and Pin KitType: KitColor: BlackMSRP: $23.93$15.00