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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DBST OOPS! REPLACEMENT KIT
Doublestar Corp.
MSRP: $24.73$15.00The DBST OOPS! Replacement Kit by Doublestar Corp. is designed to keep your firearm operational by providing essential commonly lost or worn parts in one convenient package. This comprehensive kit includes a variety of springs, detents, pins, and other...MSRP: $24.73$15.00 -
COLT FIELD REPAIR KIT M4/AR15
Colt
MSRP: $54.74$40.00The Colt Field Repair Kit M4/AR15 is a comprehensive solution designed to maintain the operational integrity of your rifle. Crafted by Colt, a trusted name in firearms manufacturing, this kit includes an assortment of mil-spec replacement parts tailored...MSRP: $54.74$40.00 -
COLT HIGH WEAR PARTS KIT M4/AR15
Colt
MSRP: $37.24$27.00The Colt High Wear Parts Kit for M4/AR15 rifles is designed to provide essential replacement components for maintaining the reliability and functionality of your firearm. Manufactured by Colt, a trusted name in the industry, this kit includes...MSRP: $37.24$27.00 -
Out of stock
COLT BOLT REPAIR KIT M4/AR15
Colt
MSRP: $32.34$20.00The Colt Bolt Repair Kit for M4/AR15 rifles offers a reliable solution for maintaining and restoring the bolt assembly of your firearm. Designed by Colt, a trusted name in firearm manufacturing, this kit provides essential components to address wear and...MSRP: $32.34$20.00 -
CMMG PARTS KIT AR15 MAGAZINE CATCH
CMMG
MSRP: $18.78$12.00The CMMG Parts Kit AR15 Magazine Catch is engineered to deliver reliable performance and precise fitment for AR15 platform rifles. Manufactured by CMMG, a trusted name in firearm components, this magazine catch is crafted with attention to detail to...MSRP: $18.78$12.00 -
CMMG PARTS KIT AR15 BOLT CATCH
CMMG
MSRP: $17.33$11.00The CMMG Parts Kit AR15 Bolt Catch is a precision-engineered component designed to enhance the functionality and maintenance of AR-15 platforms. Manufactured by CMMG, a trusted name in firearm parts, this bolt catch is crafted with high-quality materials...MSRP: $17.33$11.00 -
CMMG AR15 END PLATE AMBI SLING POINT
CMMG
MSRP: $12.08$9.00The CMMG AR15 End Plate Ambi Sling Point is a precision-engineered accessory designed to enhance the functionality of your AR-15 platform. Crafted by CMMG, a reputable manufacturer known for quality firearm components, this end plate serves as a reliable...MSRP: $12.08$9.00 -
CMMG AR15 BUFFER TUBE CASTLE NUT
CMMG
MSRP: $15.02$10.00The CMMG AR15 Buffer Tube Castle Nut is a precision-engineered component designed to secure the buffer tube to the lower receiver of AR-15 style rifles. Manufactured by CMMG, a reputable name in the firearms industry known for quality parts and...MSRP: $15.02$10.00 -
CMMG 9MM EJECTION PORT COVER KIT
CMMG
MSRP: $24.59$16.00The CMMG 9MM Ejection Port Cover Kit is a comprehensive accessory designed to enhance the functionality of compatible firearms. Manufactured by CMMG, this kit includes an ejection port cover, rod, brass deflector, and spring, providing all necessary...MSRP: $24.59$16.00 -
CMMG EJECTION PORT COVER KIT
CMMG
MSRP: $16.65$9.00The CMMG Ejection Port Cover Kit is a precision-engineered accessory designed to enhance the functionality and longevity of compatible firearms. Manufactured by CMMG, this kit includes a durable ejection port cover along with the necessary rod and spring...MSRP: $16.65$9.00 -
CMMG FORWARD ASSIST KIT
CMMG
MSRP: $29.78$16.00The CMMG Forward Assist Kit is designed to provide reliable and consistent forward assist functionality for compatible firearms. Manufactured by CMMG, a brand known for quality firearm components, this kit includes the forward assist assembly, spring,...MSRP: $29.78$16.00 -
CMMG PART KIT AR15 BOLT REHAB
CMMG
MSRP: $44.58$29.00The CMMG Part Kit AR15 Bolt Rehab is designed to provide a comprehensive solution for maintaining and refurbishing your AR15 bolt carrier group. Manufactured by CMMG, a trusted name in firearms components, this kit includes all essential parts needed to...MSRP: $44.58$29.00