Lower Receivers
Gas & Brass Armory offers a full selection of AR-15 lower receivers in Brandon, FL—perfect for your next rifle build or upgrade. Choose from trusted brands like Aero Precision, Anderson, BCM, and more. Whether you're looking for stripped lowers for a custom build or complete lowers ready to pin on your upper, we have durable, mil-spec components to fit your needs. Visit us in-store or shop online with confidence.
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LANTAC SF FRGD BUILDER SET 13.5 RL
LanTac USA LLC
MSRP: $591.66$515.00Lantac 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: $591.66$515.00 -
LANTAC SF FRGD BUILDER SET 12.5 RL
LanTac USA LLC
MSRP: $587.06$511.00Lantac 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: $587.06$511.00 -
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 LWR STD
Fortis Manufacturing Inc.
MSRP: $279.00$224.00Introducing 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: L-7075-GEN2-SMODEL: License...MSRP: $279.00$224.00 -
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 -
FAXON RECEIVER KIT FOR 10/22 BLK
Faxon Firearms
MSRP: $238.28$171.00The 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$171.00 -
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 -
BCM GUNFIGHTER LOWER GROUP SPMD BLK
Bravo Company
MSRP: $603.75$525.00The Bravo Company Manufacturing Complete AR-15 Lower Receiver is built to Mil-Spec ensuring compatibility with a wide range of parts and accessories. This AR-15 lower comes fully assembled and ready to attach to any Mil-Spec complete upper. The receiver...MSRP: $603.75$525.00 -
BCM LOWER GROUP W/BCM STK MOD 0 BLK
Bravo Company
MSRP: $603.75$525.00BCM rifles and carbines are some of the highest quality modern sporting rifles on the market today. Whether it's competition, defense, hunting or duty, BCM offers a rifle for the task at hand.MANUFACTURER: Bravo CompanyMPN: LRG-STK-MOD-0-BLKMODEL:...MSRP: $603.75$525.00 -
BOOTLEG AMBI RECEIVER SET AR 15 BLK
Bootleg
MSRP: $574.94$460.00Machined out of 7075 Billet aluminum and designed to match their newly released Upper Receiver, The Smuggler is their exciting first step into Lower receivers. Weighing in at 9.85 ounces and MIL-SPEC Hard Anodized this lower receiver will stand the test...MSRP: $574.94$460.00