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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PWS RATCHET LCK CASTLE NUT/END PLATE
Primary Weapons Systems
MSRP: $55.93$40.00The Ratchet Lock Castle Nut End Plate set works with mil-spec OR commercial buffer tubes and eliminates the need for staking. A quick upgrade to any rifle build, the Ratchet Lock Castle Nut End Plate features a QD mount and easy installation with any...MSRP: $55.93$40.00 -
NOVESKE QUICK DETACH END PLATE BLK
Noveske
MSRP: $41.64$30.00Carbine Receiver End Plate with QD Sling Swivel Attachment made by Noveske.MANUFACTURER: NoveskeMPN: 05000094MODEL: Quick Detach MountDescription: Quick DetachType: MountColor: BlackMSRP: $41.64$30.00 -
TPS AR-15 QUICK REPAIR KIT
TPS Arms
MSRP: $16.57$11.00High 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$11.00 -
SYLVAN AR15 FLARED MAGWELL BLACK
Sylvan Arms
MSRP: $61.59$44.00The 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$44.00 -
STRIKE AR ANTI-WALK PINS BLK
Strike Industries
MSRP: $24.67$15.00The SI Anti-Walk/Anti-Rotation Pin Set is a fantastic piece of hardware that adds an extra degree of security to prevent your trigger pins from walking out under fire or harsh use.MANUFACTURER: Strike IndustriesMPN: SI-AR-AWPMODEL: 0Description: Ultra...MSRP: $24.67$15.00 -
STRIKE MULTI FUNCTION END PLATE
Strike Industries
MSRP: $48.93$35.00The 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$35.00 -
STRIKE BILLET TRIGGER GUARD BLK
Strike Industries
MSRP: $36.33$26.00Form 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$26.00 -
SPIKE S TAC BILLET TRIGGER GUARD G2
Spike's Tactical
MSRP: $37.74$27.00The 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$27.00 -
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 -
SANTAN AR15 ULTRA GRIP KIT
San Tan Tactical
MSRP: $46.16$33.00The 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$33.00 -
RISE UPPER PARTS KIT
Rise Armament
MSRP: $48.99$35.00High 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$35.00 -
RISE OS KIT SPARE AR-15 PARTS
Rise Armament
MSRP: $26.38$16.00The 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$16.00