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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Out of stock
FN FN15 STRPD LWR RCVR M16 MILITARY
FN America
MSRP: $201.60$144.00Tailored after FN's production of U.S. Military issued carbinesand made to FN's exacting specification, the replica strippedreceivers are the heart of an authentic M4 or M16 build. Forgedfrom 7075-T6 aluminum, machined, and broached to preciseMIL-SPEC...MSRP: $201.60$144.00 -
Out of stock
FN FN15 STRPD LWR RCVR M4 MILITARY
FN America
MSRP: $201.60$144.00Tailored after FN's production of U.S. Military issued carbines and made to FN's exacting specification, the replica stripped receivers are the heart of an authentic M4 or M16 build. Forged from 7075-T6 aluminum, machined, and broached to precise...MSRP: $201.60$144.00 -
Out of stock
FMK AR15 POLYMER LOWER RECEIVER BB
FMK Firearms
MSRP: $44.79$32.00Manufactured 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$32.00 -
Out of stock
DBF DB15 LOWER RCVR MULTI CAL BLK
Diamondback Firearms
MSRP: $91.00$61.00Diamondback Firearms is proud to announce its line of DB15 rifles made entirely in the USA! Starting with the tried-and-true, U.S. Military-proven gas-impingement system and using only the highest quality components machined in Diamondback's CNC facility...MSRP: $91.00$61.00 -
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: -
Out of stock
CMMG LOWER MK4/AR15 BLK
CMMG
MSRP: $160.26$114.00Precision machined from forged 7075 T6 aluminum, the CMMG Mk4 AR-15 stripped lower receiver is the quality mil-spec lower ready to be the foundation for your next build. The Mk4 stripped lower comes standard in a Armor Black finish and can be assembled...MSRP: $160.26$114.00 -
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/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
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 -
Out of stock
BOOTLEG SMUGGLER AMBI LOWER BLK
Bootleg
MSRP: $324.94$260.00Machined 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: $324.94$260.00 -
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
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