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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CMMG LOWER SUB-ASSY MK9 BLK
CMMG
MSRP: $227.78$0.00As CMMG's oldest 9mm platform, the Mk9 is continuing to go through changes to become even better than before. Introducing, the new and improved Mk9, now utilizing CMMG's patented Radial Delayed Blowback operating system. Radial Delayed Blowback...MSRP: $227.78$0.00Qty in Cart: 0Quantity:Price:MSRP: $227.78$0.00Subtotal: -
CMMG LOWER ASSY MK3 308WN BLK
CMMG
MSRP: $421.86$0.00Based 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$0.00Qty in Cart: 0Quantity:Price:MSRP: $421.86$0.00Subtotal: -
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 -
BCM LOWER GROUP W/MILSPEC M4 STOCK
Bravo Company
MSRP: $493.75$0.00BCM 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$0.00Qty in Cart: 0Quantity:Price:MSRP: $493.75$0.00Subtotal: -
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
BAD WORKHORSE LOWER RECEIVER BLK
Battle Arms Development
MSRP: $175.00$125.00Battle Arms Development, Inc. (B.A.D. Inc.) is a design, research, and development firm incorporated in 2009 with a focus on small arms design including firearm components, tools, gauges, accessories, and complete weapon systems. Their Workhorse lower...MSRP: $175.00$125.00 -
Out of stock
BAD XIPHOS LOWER RECEIVER 9MM GLK
Battle Arms Development
MSRP: $298.75$239.00BATTLEARMS XIPHOS Dedicated Lower Receiver. Uses GLOCK Magazines - Small Frame Glock Calibers. Is not compatible with CMMG Delayed Blowback systems that use an AR Style magazine and Bolt Carrier Group.MANUFACTURER: Battle Arms DevelopmentMPN:...MSRP: $298.75$239.00 -
Out of stock
BALLISTIC BA10 308 LOWER RECEIVER
Ballistic Advantage
MSRP: $262.49$210.00High quality components and precise manufacturing make Ballistic Advantage firearms ideal for both new shooters and experienced gun owners. The durability, reliability and excellent build quality will ensure years of service you can count on. The...MSRP: $262.49$210.00 -
Out of stock
BALLISTIC ENHCD AR 15 LOWER RCVR
Ballistic Advantage
MSRP: $195.99$140.00The Ballistic Advantage AR15 Enhanced Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this...MSRP: $195.99$140.00 -
Out of stock
ATI AR-15 MULTI CAL RECEIVER BLK
American Tactical
MSRP: $67.51$49.00Machined from 7075-T6 aircraft grade billet aluminum, this stripped lower is ready for your next custom AR15 build.MANUFACTURER: American TacticalMPN: ATIGLOWMSMODEL: MilsportAction: Semi-automaticCaliber: 223 RemingtonType: Stripped Lower ReceiverColor:...MSRP: $67.51$49.00 -
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