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
FAXON ARAK-21 556NATO 12.5 UPPER
Faxon Firearms
MSRP: $1,056.94$920.00The ARAK-21 is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the interface is simply the take down pin, and the pivot pin. The new ARAK-21 upper receiver...MSRP: $1,056.94$920.00 -
Out of stock
FAXON DUTY BBL 556NATO 10.5 PENCIL
Faxon Firearms
MSRP: $212.52$143.00Manufactured in-house at Faxon, these barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy. Quality is imbued into Faxon's barrels from the start. They start with the best materials, either...MSRP: $212.52$143.00 -
Out of stock
COLT EPR UPPER KIT 5.56 11.5 BLK
Colt
MSRP: $1,142.64$994.00High quality components and precise manufacturing makes Colt Products ideal for both new shooters and experienced gun owners. The durability, reliability and excellent build quality will provide years of service you can count on.MANUFACTURER: Colt's...MSRP: $1,142.64$994.00 -
CMMG UPPR DSNT 5.7X28MM 6.5 CG
CMMG
MSRP: $1,169.54$0.00The 5.7x28mm personal defense cartridge has found home with the purposefully designed 6.5" DISSENT upper group, all you need is a Mk4/mil-spec AR15 lower receiver or CMMG Mk57 lower receiver. All DISSENT uppers include a lower receiver 1913 picatinny...MSRP: $1,169.54$0.00Qty in Cart: 0Quantity:Price:MSRP: $1,169.54$0.00Subtotal: -
Out of stock
BLACK RAIN BBL 458SOCOM 10.5
Black Rain Ordnance
MSRP: $243.57$174.00High quality components and precise manufacturing makes Black Rain Ordnance ideal for both new shooters and experienced gun owners. The durability, reliability and excellent build quality will provide years of service you can count on.MANUFACTURER: Black...MSRP: $243.57$174.00 -
BAD 10.5 UPPR WRKHORSE 556 AMBI GRAY
Battle Arms Development
MSRP: $816.48$0.00The WORKHORSE complete upper receiver is purpose-built around the forged WORKHORSE 7075-T6 aircraft-grade aluminum receiver and free-float rail handguard with M-LOK attachment point at 3, 6, and 9 o'clock positions. At 12 o'clock is a full-length...MSRP: $816.48$0.00Qty in Cart: 0Quantity:Price:MSRP: $816.48$0.00Subtotal: -
Out of stock
BAD 10.5 UPPR AUTH ELITE 556 C GRAY
Battle Arms Development
MSRP: $1,033.85$899.00The heart of the BAD Authority Elite upper receiver is the billet BAD556 7075-T6 aircraft grade aluminum receiver with integral ambidextrous controls and free-float rail handguard with M-LOK attachment points at 3, 6, and 9 o'clock positions. At 12...MSRP: $1,033.85$899.00 -
Out of stock
BAD 10.5 UPPR AUTH ELITE 556 C BLK
Battle Arms Development
MSRP: $941.85$819.00The heart of the BAD Authority Elite upper receiver is the billet BAD556 7075-T6 aircraft grade aluminum receiver with integral ambidextrous controls and free-float rail handguard with M-LOK attachment points at 3, 6, and 9 o'clock positions. At 12...MSRP: $941.85$819.00 -
Out of stock
BALLISTIC BBL 556 11.5 CHF HNSN
Ballistic Advantage
MSRP: $356.25$285.00This 5.56 NATO chambered 11.5 inch Cold Hammer Forged barrel is machined from CrMoV steel with a manganese phosphate finish and chrome lined bore. Their limited run of Cold Hammer Forged barrels feature an M4 Feed Ramp Extension and are HP and MPI tested...MSRP: $356.25$285.00 -
Out of stock
BALLISTIC BBL 556 14.5 CHF HNSH MID
Ballistic Advantage
MSRP: $380.00$304.00This 5.56 NATO chambered 14.5 inch Cold Hammer Forged barrel is machined from CrMoV steel with a manganese phosphate finish and chrome lined bore. Their limited run of Cold Hammer Forged barrels feature an M4 Feed Ramp Extension and are HP and MPI tested...MSRP: $380.00$304.00 -
Out of stock
BALLISTIC BBL 300BLK 9 RIGID 1/7
Ballistic Advantage
MSRP: $212.80$152.00This .300 Blackout chambered 9 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. All NFA/ATF Rules Apply. You may use this barrel with a lower receiver...MSRP: $212.80$152.00 -
Out of stock
BALLISTIC BBL 5.56 10.3 CLASSIC SRS
Ballistic Advantage
MSRP: $226.10$162.00At Ballistic Advantage they produce quality AR barrels that exceed the most enduring demands of their customers. All of their AR barrels surpass the competition in accuracy, precision, and beautifully contoured aesthetics. BA's engaged team of engineers...MSRP: $226.10$162.00