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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STRIKE ENHNCD CASTLE NUT W/QD BLK
Strike Industries
MSRP: $81.13$58.00Yet 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$58.00 -
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 -
RADIAN ULTRALIGHT QD AR15 ENDPLATE
Radian Weapons
MSRP: $55.93$40.00Announcing the Ultralight QD Endplate for AR15/M16 pattern rifles. Weighing only 6.5 grams, the endplate is machined from billet 7075-T6 aluminum with milspec Type III anodized finish and a press-fit Titanium QD sling swivel cup. This combination of...MSRP: $55.93$40.00 -
PHASE5 SLOPED QD END PLATE BLK
Phase 5 Weapon Systems
MSRP: $62.99$45.00The Phase 5 Sloped Quick Disconnect End Plate (SQD-EP) was designed to replace the standard AR15/M4 carbine end plate. While still meeting the requirements of the original design, the SQD-EP is lighter and QD Swivel compatible. The QD mount is at a 30...MSRP: $62.99$45.00 -
MAGPUL B.A.D. LEVER BLK
Magpul Industries
MSRP: $43.82$32.00Designed to considerably improve the speed and efficiency of the AR15/M16 bolt catch, the B.A.D. Lever quickly addresses reloading and malfunction clearance shortcomings of AR15/M16 platforms by extending a paddle to the right side of the weapon,...MSRP: $43.82$32.00 -
MAGPUL ALUM ENHANCED TRIGGER GRD
Magpul Industries
MSRP: $30.52$22.00The Enhanced Trigger Guard is a black anodized aluminum drop in replacement for the AR15/M4 weapons platform. It features a shallow V shape for better use of gloves in tactical shooting or cold weather operations. The Enhanced Trigger Guard is...MSRP: $30.52$22.00 -
MAGPUL MOE ENHANCED TRIG GUARD ODG
Magpul Industries
MSRP: $15.59$10.00The MOE (Magpul Original Equipment) Enhanced Trigger Guard is a polymer drop-in replacement for the AR15 / M4 weapons platform. This upgraded trigger guard is easily installed without the use of specialized tools, using three set screws to secure it to...MSRP: $15.59$10.00 -
MAGPUL MOE ENHANCED TRIG GUARD FDE
Magpul Industries
MSRP: $15.59$10.00The MOE (Magpul Original Equipment) Enhanced Trigger Guard is a polymer drop-in replacement for the AR15 / M4 weapons platform. This upgraded trigger guard is easily installed without the use of specialized tools, using three set screws to secure it to...MSRP: $15.59$10.00