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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LUTH AR TAKEDOWN PIN DETENT W/SPG 10
Luth-AR
MSRP: $31.78$20.00LUTH-AR 10-Pack of takedown pin detents and detent springs.MANUFACTURER: Luth-ARMPN: LR-15A-10MODEL: 0Type: PartMSRP: $31.78$20.00 -
LUTH AR BUFFER RETAINER W/SPG 10PK
Luth-AR
MSRP: $35.52$26.00If you are working on several AR's and are constantly in need of buffer retainers, this 10 pack is for you. The Buffer retainer is designed to retain the buffer while under spring tension in the buffer tube.MANUFACTURER: Luth-ARMPN: LR-01A-10MODEL:...MSRP: $35.52$26.00 -
LUTH AR FORWARD ASSIST ASSEMBLY
Luth-AR
MSRP: $22.11$14.00Forward assist assembly for AR-15.MANUFACTURER: Luth-ARMPN: UR-08-RMODEL: 0Type: PartMSRP: $22.11$14.00 -
LUTH AR EJECTION PORT COVER ASSEMBLY
Luth-AR
MSRP: $11.62$8.00Ejection Port Cover Assembly for AR-15.MANUFACTURER: Luth-ARMPN: UR-05AMODEL: 0Type: PartMSRP: $11.62$8.00 -
LUTH AR AMBI SAFETY SELECTOR AR15
Luth-AR
MSRP: $38.15$28.00Ambidextrous Mil-Spec AR-15 safety selector with Manganese Phosphate finish.MANUFACTURER: Luth-ARMPN: LR-08BMODEL: 0Type: PartColor: BlackMSRP: $38.15$28.00 -
LUTH AR PADDLE OVERSIZED BOLT CATCH
Luth-AR
MSRP: $28.88$21.00The Paddle Oversize Bolt Catch allows easy and rapid bolt manipulation. The large paddle facilitates positive bolt release and locking.MANUFACTURER: Luth-ARMPN: LR-11LMODEL: 0Type: PartColor: BlackMSRP: $28.88$21.00 -
LUTH AR CARBINE LOCK RING/CASTLE NUT
Luth-AR
MSRP: $7.84$5.00High quality components and precise manufacturing make LuthAR 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:...MSRP: $7.84$5.00 -
LUTH AR CARBINE LATCH PLATE
Luth-AR
MSRP: $5.05$4.00High quality components and precise manufacturing make LuthAR 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:...MSRP: $5.05$4.00 -
LUTH AR PADDLE BOLT CATCH 308
Luth-AR
MSRP: $32.83$24.00The Paddle .308 Oversize Bolt Catch allows easy and rapid bolt manipulation. The large paddle facilitates positive bolt release and locking. It is perfect for use in competition where high-speed manipulation counts, as well as hunting, law enforcement,...MSRP: $32.83$24.00 -
LUTH AR .750 ADJUSTABLE GAS BLOCK
Luth-AR
MSRP: $31.42$22.00Designed to fit barrels with a .750 diameter, this high-quality piece helps to improve the performance of your firearm. It's made from durable materials and easy to install, making it a must-have for any AR owner. Plus, its low-profile design won't add...MSRP: $31.42$22.00 -
LUTH AR HELICAL 1 PIECE GAS RING
Luth-AR
MSRP: $5.97$4.00High quality components and precise manufacturing make LuthAR 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:...MSRP: $5.97$4.00 -
LUTH AR HELICAL 1 PIECE GAS RING 308
Luth-AR
MSRP: $6.75$5.00High quality components and precise manufacturing make LuthAR 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:...MSRP: $6.75$5.00