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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Out of stock
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 -
Out of stock
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 -
Out of stock
BCM LOWER GROUP W/MILSPEC M4 STOCK
Bravo Company
MSRP: $493.75$395.00BCM 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-M4MODEL:...MSRP: $493.75$395.00 -
Out of stock
BAD WORKHORSE COMPLETE LOWR B5 STOCK
Battle Arms Development
MSRP: $462.49$370.00This complete WORKHORSE Rifle Lower with B5 Systems Bravo Stock is fully assembled and ready for your rifle upper.MANUFACTURER: Battle Arms DevelopmentMPN: WH-LR-R-B5MODEL: WorkhorseAction: Semi-automaticFinish: AnodizedCaliber: MultiType: Complete Lower...MSRP: $462.49$370.00 -
Out of stock
AM DEF UIC STRPPD LOWER RECEIVER BLK
American Defense Mfg.
MSRP: $498.75$399.00The UIC billet 7075-T6 AR-15 Pattern strip lower receiver is outfitted with their proprietary Ambidextrous magazine release, Ambidextrous bolt catch/ release lever, and their dimpled take down and pivot pins. Also includes an installed milspec magazine...MSRP: $498.75$399.00 -
Out of stock
AERO M4E1 PRO COMP LOWER CARBINE BRN
Aero Precision
MSRP: $599.99$480.00The M4E1 PRO Lower Receiver seamlessly integrates ambidextrous controls into the M4E1 Lower that allows for the shooter to easily operate the bolt catch, magazine release, and safety without modifying their dominant firing hand.MANUFACTURER: Aero...MSRP: $599.99$480.00 -
Out of stock
AERO M4E1 PRO COMP LOWER CARBINE ODG
Aero Precision
MSRP: $599.99$480.00The M4E1 PRO Lower Receiver seamlessly integrates ambidextrous controls into the M4E1 Lower that allows for the shooter to easily operate the bolt catch, magazine release, and safety without modifying their dominant firing hand.MANUFACTURER: Aero...MSRP: $599.99$480.00 -
Out of stock
AERO M4E1 PRO COMP LOWER CARBINE BLK
Aero Precision
MSRP: $599.99$480.00The M4E1 PRO Lower Receiver seamlessly integrates ambidextrous controls into the M4E1 Lower that allows for the shooter to easily operate the bolt catch, magazine release, and safety without modifying their dominant firing hand.MANUFACTURER: Aero...MSRP: $599.99$480.00 -
Out of stock
AERO M5 AR10 CMPLTE LWR W/MOE BLK
Aero Precision
MSRP: $581.24$465.00The Aero Precision AR15 Complete Lower Receiver is the perfect base for your custom AR15 build. This complete lower features AR15 Gen 2 Lower and is upgraded to include a MOE SL Grip and MOE SL Carbine Stock. Save when you buy it complete and let their...MSRP: $581.24$465.00 -
Out of stock
AERO AR9 COMPLETE LOWER 9/40 BLK
Aero Precision
MSRP: $449.99$360.00The Aero Precision EPC-9 Complete Lower Receiver is the perfect base for your custom AR9 build. This lower receiver comes without a stock/brace giving the builder flexibility to choose exactly what configuration they want the first time.MANUFACTURER:...MSRP: $449.99$360.00 -
Out of stock
AERO M5 AR10 COMPLETE LOWER BLK
Aero Precision
MSRP: $493.74$395.00Aero Precision's M5 .308 Complete Lower Receiver is the perfect base for your custom big-bore AR rifle. Save when you buy it complete and let their specialist do the installation for you!MANUFACTURER: Aero PrecisionMPN: APAR308214MODEL: M5Action:...MSRP: $493.74$395.00 -
Out of stock
AERO AR15 M4E1 COMPLETE LOWER BK
Aero Precision
MSRP: $368.74$295.00The M4E1 Complete Lower Receiver is the perfect base for your custom AR15 build. This complete lower features our new M4E1 Lower Receiver with an A2 Grip.MANUFACTURER: Aero PrecisionMPN: APAR600112MODEL: M4E1Action: Semi-automaticFinish: AnodizedCaliber:...MSRP: $368.74$295.00