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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LBE AR15 END PLATE BLK
LBE Unlimited
MSRP: $9.65$6.00The LBE AR-15 Receiver End Plate is made of steel and has a Magnesium Phosphate finish. Made in the USA.MANUFACTURER: LBE UnlimitedMPN: ARLPLTMODEL: AR-15Finish: Manganese PhosphateType: End PlateMSRP: $9.65$6.00 -
LBE AR CASTLE NUT
LBE Unlimited
MSRP: $10.63$9.00The LBE AR-15 Castle Nut is made of 4140 steel and has a Magnesium Phosphate finish. Made in the USA.MANUFACTURER: LBE UnlimitedMPN: ARCNUTMODEL: Castle NutFinish: Manganese PhosphateType: Castle NutMSRP: $10.63$9.00 -
LBE AR TRIGGER GUARD
LBE Unlimited
MSRP: $6.91$5.00Standard AR15 Trigger Guard.MANUFACTURER: LBE UnlimitedMPN: AR15TGMODEL: 0Description: AluminumType: Trigger GuardMSRP: $6.91$5.00 -
LBE AK RETAINING PLATE
LBE Unlimited
MSRP: $6.91$5.00US Made AK Retaining Plate, use in place of the shepard hook spring.MANUFACTURER: LBE UnlimitedMPN: AKRPLTMODEL: AK Retaining PlateType: PartMSRP: $6.91$5.00 -
LBE AR ESSENTIALS KIT
LBE Unlimited
MSRP: $18.89$12.00LBE US Made AR essentials kits are appropriate for your next build and great to have on hand to service your favorite AR.MANUFACTURER: LBE UnlimitedMPN: ARESNTLMODEL: AR Essentials KitType: PartMSRP: $18.89$12.00 -
LBE AR SWIVEL ASSEMBLY
LBE Unlimited
MSRP: $11.32$7.00AR Swivel Assembly, included is a Mil Spec Swivel and RivetMANUFACTURER: LBE UnlimitedMPN: ARSWIVMODEL: AR Swivel AssemblyType: PartMSRP: $11.32$7.00 -
LBE AR FRONT SIGHT TAPER PINS
LBE Unlimited
MSRP: $7.34$5.00AR Front Sight Taper Pins, US Made. Pack of 2MANUFACTURER: LBE UnlimitedMPN: ARTPSMODEL: AR Front Sight Taper PinsType: PartMSRP: $7.34$5.00 -
LBE AR15 BOLT CATCH PLUNGER 20PK
LBE Unlimited
MSRP: $13.81$9.00Pack of 20 AR-15 bolt catch plungers. Made in the USA.MANUFACTURER: LBE UnlimitedMPN: ARBCPL20PKMODEL: 0Description: AR-15 Bolt Catch PlungerType: PartMSRP: $13.81$9.00 -
LBE AR15 SELECTOR DETENT 20PK
LBE Unlimited
MSRP: $16.57$11.00This is a 20-pack of AR-15 selector detents made of 12L14 steel. Made in the USA.MANUFACTURER: LBE UnlimitedMPN: ARSLDT20PKMODEL: 0Description: DetentType: PartMSRP: $16.57$11.00 -
KAK AR-15 LPK BASIC BUILD KIT
KAK Industry
MSRP: $34.99$25.00KAK Industry was founded and incorporated in 2011 by Kurt Kosman to address a gap in the firearms market for quality, American-Made components at affordable, sustainable prices.MANUFACTURER: KAK IndustryMPN: AR15-LP-KT-02MODEL: Basic Build KitMSRP: $34.99$25.00 -
KAK AR-15 LOWER PARTS KIT NO FCG
KAK Industry
MSRP: $44.79$32.00KAK Industry was founded and incorporated in 2011 by Kurt Kosman to address a gap in the firearms market for quality, American-Made components at affordable, sustainable prices.MANUFACTURER: KAK IndustryMPN: 506-1015-009MODEL: AR-15 Lower Parts...MSRP: $44.79$32.00 -
FORTIS K2 ENHANCD AR15 END PLATE BLK
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