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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ADV TECH AR15 CASTLE NUT
ATI Outdoors
MSRP: $12.47$7.56High quality components and precise manufacturing make Advance Tech 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: ATI...MSRP: $12.47$7.56 -
ADV TECH LOP QUICK STOP
ATI Outdoors
MSRP: $22.51$13.64High quality components and precise manufacturing make Advance Tech 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: ATI...MSRP: $22.51$13.64 -
NOVESKE QUICK DETACH END PLATE BLK
Noveske
MSRP: $41.64$29.74Carbine Receiver End Plate with QD Sling Swivel Attachment made by Noveske.MANUFACTURER: NoveskeMPN: 05000094MODEL: Quick Detach MountDescription: Quick DetachType: MountColor: BlackMSRP: $41.64$29.74 -
Out of stock
WMD ACCENT BUILD KIT 556 RED
WMD Guns
MSRP: $207.90$148.50The color coated parts included are: Ejection Port Cover Door, Forward Assist, Castle Nut, Receiver End Plate, Bolt Catch, Mag Lever, Mag Button, Pivot Pin, Takedown Pin, Trigger Guard, Buffer Retainer. Also includes the pins and spring kit for the Lower...MSRP: $207.90$148.50 -
Out of stock
WMD ACCENT BUILD KIT 556 FDE
WMD Guns
MSRP: $207.90$148.50The color coated parts included are: Ejection Port Cover Door, Forward Assist, Castle Nut, Receiver End Plate, Bolt Catch, Mag Lever, Mag Button, Pivot Pin, Takedown Pin, Trigger Guard, Buffer Retainer. Also includes the pins and spring kit for the Lower...MSRP: $207.90$148.50 -
STRIKE ENHNCD CASTLE NUT W/QD BLK
Strike Industries
MSRP: $81.13$57.95Yet another first, the Enhanced Castle Nut and Extended End Plate combo represent Strike Industries' dedication to thinking outside the box. The SI Enhanced ECN and EEP stand out from the generic parts kit units in both aesthetics and function. The steel...MSRP: $81.13$57.95 -
Out of stock
SANTAN AR15 ULTRA GRIP KIT
San Tan Tactical
MSRP: $46.16$32.97The Ultra Grip Kit includes the Ultra Grip Extended Mag Release Button, Ultra Grip Bolt Catch, and Ultra Grip Forward Assist with spring. The San Tan Ultra Grip pattern provides excellent grip for use with or without gloves. Fits all mil spec upper and...MSRP: $46.16$32.97 -
Out of stock
LUTH AR FIELD REPAIR KIT AR15
Luth-AR
MSRP: $39.47$28.19Keep your AR running smoothly with Luth-AR's Field Repair Kit. It includes the most common parts you need to fix common issues and get your rifle back to peak performance. With durable materials and easy-to-use instructions, this kit is a must-have for...MSRP: $39.47$28.19 -
Out of stock
LUTH AR .750 ADJUSTABLE GAS BLOCK
Luth-AR
MSRP: $31.42$19.04Designed 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$19.04 -
LUTH AR TEARDROP FORWARD ASSIST ASSY
Luth-AR
MSRP: $29.87$18.10Maintain the smooth operation of your AR-15 with Luth-AR's complete teardrop forward assembly. This high-quality set includes all the components you need to properly install your forward assist, including the teardrop forward assist, assist spring, and...MSRP: $29.87$18.10 -
LBE AR TRIGGER GUARD
LBE Unlimited
MSRP: $6.91$4.19Standard AR15 Trigger Guard.MANUFACTURER: LBE UnlimitedMPN: AR15TGMODEL: 0Description: AluminumType: Trigger GuardMSRP: $6.91$4.19 -
LBE AR15 BOLT CATCH PLUNGER 20PK
LBE Unlimited
MSRP: $13.81$8.37Pack of 20 AR-15 bolt catch plungers. Made in the USA.MANUFACTURER: LBE UnlimitedMPN: ARBCPL20PKMODEL: 0Description: AR-15 Bolt Catch PlungerType: PartMSRP: $13.81$8.37