AR15 Parts
Gas & Brass Armory is your trusted source for AR-15 parts in Brandon, FL. Whether you're upgrading your current rifle or building a custom AR from the ground up, we stock high-quality components from top manufacturers like Aero Precision, Magpul, Radian Weapons, BCM, Geissele, and more. Shop complete uppers, stripped lowers, triggers, handguards, buffer kits, barrels, and everything you need for your next AR build. Our expert staff is here to help you build it right the first time.
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LANTAC SF FRGD BUILDER SET 6.75 RL
LanTac USA LLC
MSRP: $614.36$492.00Lantac AR-15 builder set includes an upper and lower receiver along with an M-LOK handguard. Their forged receiver set is packed with 'above milspec' features, making it an ideal choice for shooters seeking an upgraded configuration while maintaining a...MSRP: $614.36$492.00 -
GGP BILLET LOWER RCVR
Grey Ghost Precision
MSRP: $170.65$122.00The MKII version of the GGP-S Series brings a new level of customizability never before seen in our rifle receivers. Not only can you build your own version of the Heavy or Light rifle, but you can use your favorite aftermarket parts to complete the...MSRP: $170.65$122.00 -
FORTIS LICENSE GEN II AR15 SET AMBI
Fortis Manufacturing Inc.
MSRP: $516.50$414.00Introducing the Fortis License Lower Receiver. Made from 7075 T6 billet aluminum. The GEN II has all the same features from the first edition, but with added integrated carbon fiber.MANUFACTURER: Fortis Manufacturing, Inc.MPN: LM-7075-GEN2-AMODEL:...MSRP: $516.50$414.00 -
FMK AR15 POLYMER LOWER RECEIVER BLUE
FMK Firearms
MSRP: $55.93$40.00Manufactured in the USA of a high impact proprietary composite polymer. This state of the art polymer allows for superior strength, unmatched durability and is extremely lightweight. The Ar1 eXtreme is by far the strongest composite polymer lower on the...MSRP: $55.93$40.00 -
FMK AR15 POLYMER LOWER RECEIVER BB
FMK Firearms
MSRP: $44.79$33.00Manufactured in the USA of a high impact proprietary composite polymer. This state of the art polymer allows for superior strength, unmatched durability and is extremely lightweight. The Ar1 eXtreme is by far the strongest composite polymer lower on the...MSRP: $44.79$33.00 -
FMK AR15 POLYMER LOWER RECEIVER BLK
FMK Firearms
MSRP: $44.79$33.00This state of the art polymer allows for superior strength, unmatched durability and is extremely lightweight at only 4.3oz. The AR1 extreme is by far the strongest composite polymer lower on the market today.MANUFACTURER: FMK FirearmsMPN: FMKGAR1EMODEL:...MSRP: $44.79$33.00 -
FAXON RECEIVER KIT FOR 10/22 BLK
Faxon Firearms
MSRP: $238.28$160.00The Faxon 10/22 Receiver Kit provides a quick and easy upgrade of your Ruger 10/22, or serves as the cornerstone for your next 10/22 rifle build. Faxon 10/22 Receivers are compatible with all Ruger OEM 10/22 non-takedown components, all Faxon Rimfire...MSRP: $238.28$160.00 -
DBST STAR-15 STRIPPED LOWER AR15
Doublestar Corp.
MSRP: $132.99$95.00Doublestar Corp. makes high quality firearm components for the AR Platform. This stripped lower is the perfect base for your next custom AR build.MANUFACTURER: Doublestar Corp.MPN: DSCL101MODEL: Stripped LowerAction: Semi-automaticFinish:...MSRP: $132.99$95.00 -
DBF DB15 LOWER RCVR MULTI CAL BLK
Diamondback Firearms
MSRP: $91.00$65.00Diamondback Firearms is proud to announce its line of DB15 rifles made entirely in the USA! Starting with the tried-and-true, U.S. Military-proven gas-impingement system and using only the highest quality components machined in Diamondback's CNC facility...MSRP: $91.00$65.00 -
CMMG LOWER MK4/AR15 BLK
CMMG
MSRP: $160.26$105.00Precision machined from forged 7075 T6 aluminum, the CMMG Mk4 AR-15 stripped lower receiver is the quality mil-spec lower ready to be the foundation for your next build. The Mk4 stripped lower comes standard in a Armor Black finish and can be assembled...MSRP: $160.26$105.00 -
CMMG LOWER ASSY MK3 308WN BLK
CMMG
MSRP: $421.86$338.00Based off the popular high pattern LR-308, the tried-and-true Mk3 line is designed to handle larger calibers unsuitable for the AR-15 platform like .308 Win or 6.5 Creedmoor.MANUFACTURER: CMMGMPN: 38CA2AC-ABMODEL: MK3Action: Semi-automaticFinish:...MSRP: $421.86$338.00 -
BCM LOWER GROUP W/BCM STK MOD0 FDE
Bravo Company
MSRP: $603.75$525.00Exacting construction and rigorous durability are the standard for every weapon system that comes off the line at BCM. BCM Professional Grade Weaponry are hard use tools, built to perform in combat where unfailing performance is the only standard for men...MSRP: $603.75$525.00