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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CMC AR-15 LPK W/CURVED TRIGGER
CMC Triggers
MSRP: $280.13$225.00The CMC AR-15 Lower Parts Kit (LPK) with Curved Trigger is designed to provide reliable and precise operation for your AR-15 build or upgrade. Manufactured by CMC Triggers, this kit features a 3.5-pound single-stage curved trigger that delivers a smooth...MSRP: $280.13$225.00 -
CALDWELL AR FIELD REPAIR KIT
Caldwell
MSRP: $17.42$11.00The Caldwell AR Field Repair Kit is designed to provide essential replacement parts for AR-15 rifles. This comprehensive kit includes commonly needed detents and springs, addressing components that are prone to wear or accidental loss during regular use...MSRP: $17.42$11.00 -
BCM GUNFIGHTER TRGGR GUARD MOD 0 FDE
Bravo Company
MSRP: $11.47$7.00The Bravo Company BCM GUNFIGHTER TRGGR GUARD MOD 0 FDE is a precision-engineered trigger guard designed for AR-15, M16, and M4 style rifles. Crafted by Bravo Company, a trusted name in firearm components, this Mod 0 version offers a robust and reliable...MSRP: $11.47$7.00 -
BCM GUNFIGHTER TRGGR GUARD MOD 0 BLK
Bravo Company
MSRP: $11.47$7.00The Bravo Company BCM GUNFIGHTER TRGGR GUARD MOD 0 BLK is a precision-engineered trigger guard designed to enhance the functionality and durability of AR-15, M16, and M4 style rifles. Crafted with attention to detail, this trigger guard provides a secure...MSRP: $11.47$7.00 -
B5 TRIGGER GUARD COMPOSITE FDE
B5 Systems
MSRP: $11.76$8.00The B5 Systems TRIGGER GUARD COMPOSITE in Flat Dark Earth (FDE) is a durable and practical upgrade designed to replace the standard trigger guard on compatible rifles. Crafted from high-strength composite materials, this trigger guard offers enhanced...MSRP: $11.76$8.00 -
B5 TRIGGER GUARD COMPOSITE BLK
B5 Systems
MSRP: $11.76$8.00The B5 Systems TRIGGER GUARD COMPOSITE BLK is a durable replacement trigger guard designed to enhance the functionality of compatible rifles. Manufactured from high-strength composite materials, this trigger guard offers a lightweight yet robust option...MSRP: $11.76$8.00 -
B5 TRIGGER GUARD FDE
B5 Systems
MSRP: $31.35$19.00The B5 TRIGGER GUARD FDE from B5 Systems is a precision-engineered upgrade designed to enhance the functionality of your AR-style rifle. Featuring a robust construction with a Flat Dark Earth (FDE) finish, this trigger guard provides a durable and...MSRP: $31.35$19.00 -
B5 TRIGGER GUARD BLK
B5 Systems
MSRP: $31.35$19.00The B5 Systems TRIGGER GUARD BLK is a precision-engineered replacement trigger guard designed to enhance the functionality of AR-style rifles. Crafted from durable materials, this black trigger guard provides an expanded profile that facilitates easier...MSRP: $31.35$19.00 -
B5 END PLATE BLK
B5 Systems
MSRP: $31.35$19.00The B5 Systems End Plate in black is designed to provide a durable and reliable attachment point for single point slings. Crafted from solid steel, this one-piece end plate features limited rotation for secure and consistent performance. Its manganese...MSRP: $31.35$19.00 -
ADV TECH AR15 CASTLE NUT
ATI Outdoors
MSRP: $12.47$7.00The ADV TECH AR15 Castle Nut by ATI Outdoors is a precision-engineered component designed to enhance the assembly and stability of AR15 platforms. Crafted with durability and reliability in mind, this castle nut provides a secure fit, ensuring the proper...MSRP: $12.47$7.00 -
ADV TECH AR15 GRIP SCREW/WASHER
ATI Outdoors
MSRP: $4.64$3.00The ADV TECH AR15 Grip Screw and Washer from ATI Outdoors is designed to provide a reliable fastening solution for AR15 pistol grips. Featuring a durable steel 1/4-28 x 1" hex bolt paired with a steel star washer, this set offers enhanced stability and...MSRP: $4.64$3.00 -
ADV TECH LOP QUICK STOP
ATI Outdoors
MSRP: $22.51$13.00The ADV TECH LOP QUICK STOP by ATI Outdoors is a precision-engineered firearm component designed to enhance the ergonomics and functionality of your rifle. Crafted with durable materials and meticulous attention to detail, this part offers reliable...MSRP: $22.51$13.00