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 15 RL
LanTac USA LLC
MSRP: $603.16$524.49Lantac 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: $603.16$524.49 -
LANTAC SF FRGD BUILDER SET 13.5 RL
LanTac USA LLC
MSRP: $591.66$514.49Lantac 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: $591.66$514.49 -
LANTAC SF FRGD BUILDER SET 12.5 RL
LanTac USA LLC
MSRP: $587.06$510.49Lantac 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: $587.06$510.49 -
LANTAC SF FRGD BUILDER SET 10.5 RL
LanTac USA LLC
MSRP: $579.01$503.49Lantac 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: $579.01$503.49 -
LANTAC SF FRGD BUILDER SET 6.75 RL
LanTac USA LLC
MSRP: $614.36$491.49Lantac 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$491.49 -
GGP BILLET LOWER RCVR
Grey Ghost Precision
MSRP: $170.65$121.89The 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$121.89 -
FORTIS LICENSE GEN II AR15 SET AMBI
Fortis Manufacturing Inc.
MSRP: $516.50$413.20Introducing 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$413.20 -
FORTIS LICENSE GEN II AR15 LWR STD
Fortis Manufacturing Inc.
MSRP: $279.00$223.20Introducing 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: L-7075-GEN2-SMODEL: License...MSRP: $279.00$223.20 -
FORTIS LICENSE GEN II AR15 LWR AMBI
Fortis Manufacturing Inc.
MSRP: $296.81$237.45Introducing 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: L-7075-GEN2-AMODEL: License...MSRP: $296.81$237.45 -
FMK AR15 POLYMER LOWER RECEIVER BB
FMK Firearms
MSRP: $44.79$31.99Manufactured 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$31.99 -
FMK AR15 POLYMER LOWER RECEIVER BLK
FMK Firearms
MSRP: $44.79$31.99This 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$31.99 -
FMK AR15 POLYMER LOWER RECEIVER FDE
FMK Firearms
MSRP: $44.79$31.99Manufactured 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$31.99