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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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$19.00Includes forward assist assembly, spring, and installation pin.MANUFACTURER: CMMGMPN: 55BA556MODEL: 0Type: KitColor: BlackMSRP: $29.78$19.00 -
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$13.00Parts 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$13.00 -
CALDWELL AR FIELD REPAIR KIT
Caldwell
MSRP: $17.42$11.00This kit includes replacement detents and springs for the AR-15 that are most commonly damaged or lost.MANUFACTURER: CaldwellMPN: 1078425MODEL: 0Type: KitMSRP: $17.42$11.00 -
BCM GUNFIGHTER TRGGR GUARD MOD 0 FDE
Bravo Company
MSRP: $11.47$7.00BCM GUNFIGHTER Trigger Guard for your AR15, M16, M4 style rifle.MANUFACTURER: Bravo CompanyMPN: BCM-GTG-MOD-0-FDEMODEL: Mod 0Type: Trigger GuardColor: Flat Dark EarthMSRP: $11.47$7.00 -
BCM GUNFIGHTER TRGGR GUARD MOD 0 BLK
Bravo Company
MSRP: $11.47$7.00BCM GUNFIGHTER Trigger Guard for your AR15, M16, M4 style rifle.MANUFACTURER: Bravo CompanyMPN: BCM-GTG-MOD-0-BLKMODEL: Mod 0Type: Trigger GuardColor: BlackMSRP: $11.47$7.00 -
B5 TRIGGER GUARD COMPOSITE FDE
B5 Systems
MSRP: $11.76$8.00The B5 Systems Bravo trigger guard offers a drop in upgrade over the standard AR trigger guard. The enlarged profile allows for glove use in cold weather or tactical operation. Proudly made in the USA.MANUFACTURER: B5 SystemsMPN: PTG-1128MODEL: 0Type:...MSRP: $11.76$8.00 -
B5 TRIGGER GUARD COMPOSITE BLK
B5 Systems
MSRP: $11.76$8.00The B5 Systems Bravo trigger guard offers a drop in upgrade over the standard AR trigger guard. The enlarged profile allows for glove use in cold weather or tactical operation. Proudly made in the USA.MANUFACTURER: B5 SystemsMPN: PTG-1127MODEL: 0Type:...MSRP: $11.76$8.00