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 PART KIT AR15 BOLT REHAB
CMMG
MSRP: $44.58$31.00Kit for repairing your Bolt/BCG. All Parts Meet or Exceed Mil-Spec.MANUFACTURER: CMMGMPN: 55AFF68MODEL: 0Description: Parts KitType: KitMSRP: $44.58$31.00 -
CMMG AR-15 PARTS KIT FIELD REPAIR
CMMG
MSRP: $43.86$29.00The 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$29.00 -
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 -
CMC AR-15 LPK W/FLAT TRIGGER
CMC Triggers
MSRP: $280.13$225.00Enhanced with a 3.5lb Single Stage Flat Trigger, this kit is a great addition to your AR15 build. From amateur gun builder to seasoned expert gun smith, this lower parts kit is for you. NOTE: Grip NOT included. Kit Contains 3.5lb Single Stage Trigger 1...MSRP: $280.13$225.00 -
CMC AR-15 LPK W/CURVED TRIGGER
CMC Triggers
MSRP: $280.13$225.00Enhanced with a 3.5lb Single Stage Curved Trigger, this kit is a great addition to your AR15 build. From amateur gun builder to seasoned expert gun smith, this lower parts kit is for you. NOTE: Grip NOT included. Kit Contains 3.5lb Single Stage Trigger 1...MSRP: $280.13$225.00 -
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 -
B5 TRIGGER GUARD FDE
B5 Systems
MSRP: $31.35$19.00The 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. The trigger guard also maintains the original swing down function for use...MSRP: $31.35$19.00