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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BCM GUNFIGHTER TRGGR GUARD MOD 0 BLK
Bravo Company
MSRP: $11.47$6.95BCM 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$6.95 -
B5 TRIGGER GUARD COMPOSITE FDE
B5 Systems
MSRP: $11.76$7.13The 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$7.13 -
B5 END PLATE BLK
B5 Systems
MSRP: $31.35$19.00The B5 Systems Quick Disconnect End Plate provides users with an alternative attachment point for single point sling use. The limited rotation one piece steel construction allows for proper staking and a lifetime of service. The milspec manganese...MSRP: $31.35$19.00 -
ADV TECH AR15 GRIP SCREW/WASHER
ATI Outdoors
MSRP: $4.64$2.81This grip screw set can be used for a new build or as a replacement for that frustrating OEM flat head screw. It comes with a steel 1/4-28 x 1" Hex bolt and a steel star washer.MANUFACTURER: ATI OutdoorsMPN: A.5.10.2548MODEL: 0Description: AR Pistol Grip...MSRP: $4.64$2.81 -
TPS AR-15 QUICK REPAIR KIT
TPS Arms
MSRP: $16.57$10.04High quality components and precise manufacturing make TPS Arms 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: TPS...MSRP: $16.57$10.04 -
SYLVAN AR15 FLARED MAGWELL BLACK
Sylvan Arms
MSRP: $61.59$43.99The Sylvan Arms Flared Magwell allows no-look, faster loading of magazines. With integral trigger guard, and wider flare than competing products, the Sylvan Arms Flared Magwell outperforms any other magwell available on the market today.MANUFACTURER:...MSRP: $61.59$43.99 -
STRIKE MULTI FUNCTION END PLATE
Strike Industries
MSRP: $48.93$34.95The SI Multi-Function End Plate and Anti-Rotation Castle Nut are designed to modernize and improve the often overlooked castle nut and endplate system. While the traditional endplate and castle nut work very well in securing your receiver extension,...MSRP: $48.93$34.95 -
STRIKE BILLET TRIGGER GUARD BLK
Strike Industries
MSRP: $36.33$25.95Form meets function with the Strike Industries line of Aluminum trigger guards. Not only does the sculpted, billet aluminum trigger guard make your rifle stand out from the pack, it also provides real added value over the competition. The Cobra's hood...MSRP: $36.33$25.95 -
SPIKE S TAC BILLET TRIGGER GUARD G2
Spike's Tactical
MSRP: $37.74$26.96The Spike's Tactical Billet Trigger Guard Gen II is a drop in replacement trigger guard that's styled after the Spike's billet lower trigger guard. The extra room that this billet trigger guard provides is excellent when using shooting gloves or even...MSRP: $37.74$26.96 -
SEEKINS BILLET AR TRIGGER GUARD BLK
Seekins Precision
MSRP: $33.60$24.00The Seekins Precision Billet Trigger Guard is a functional upgrade for any Mil-Spec lower receiver. Machined from a solid piece of 6061-T6, the profile and size accommodate winter gloves while maintaining precise trigger control.MANUFACTURER: Seekins...MSRP: $33.60$24.00 -
RISE UPPER PARTS KIT
Rise Armament
MSRP: $48.99$34.99High quality components and precise manufacturing make Rise Armament 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: $48.99$34.99 -
RISE OS KIT SPARE AR-15 PARTS
Rise Armament
MSRP: $26.38$15.99The parts of the OS Kit are housed in a tin with a magnetic base that keeps all the parts sorted. On the inside of the lid is a to-scale image of all the included parts so you can easily identify each spare part. From screws to pins to detents, the RISE...MSRP: $26.38$15.99