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
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 -
Out of stock
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 -
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
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 -
Out of stock
AERO AR15 ENHANCED COMPLETE LWR STR
Aero Precision
MSRP: $462.49$370.00The M4E1 Complete Lower Receiver is the perfect base for your custom AR15 build. This complete lower features the M4E1 Lower Receiver and is upgraded to include a Magpul MOE Grip and STR Stock.MANUFACTURER: Aero PrecisionMPN: APAR600103MODEL: M4E1Action:...MSRP: $462.49$370.00 -
Out of stock
AERO AR15 ENHANCED COMPLETE LOWER BK
Aero Precision
MSRP: $481.24$385.00The AR15 Complete Lower Receiver is the perfect base for your custom AR15 rifle. The Enhanced Complete Lower features a Magpul MOE Grip, Magpul STR Stock and Billet Trigger Guard.MANUFACTURER: Aero PrecisionMPN: APAR501112MODEL: Standard Gen 2...MSRP: $481.24$385.00