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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FAXON DUTY BBL 556NATO 10.5 SOCOM
Faxon Firearms
MSRP: $199.64$156.00Manufactured 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: $199.64$156.00 -
DBB BBL 300 BLK 10.5 PSTL BLK
Diamondback Barrels
MSRP: $113.40$90.00Diamondback Firearms began in 1989 with a desire to create products without compromise. Since then Diamondback has developed some of the most efficient AR15 and concealed carry pistol platforms available. This 10.5" medium profile 300 AAC blackout is...MSRP: $113.40$90.00 -
DD BBL ASSY 5.56 1-7 CHF 14.5 GOV M
Daniel Defense
MSRP: $422.50$338.00Cold Hammer Forging of barrels has been known for decades to produce the most accurate, longest lasting rifle barrels obtainable. The Cold Hammer Forging of barrels is accomplished through intense hydraulic pressure applied at opposing angles by carbide...MSRP: $422.50$338.00 -
DD BBL ASSY 5.56 1-7 CHF 10.3 CARB
Daniel Defense
MSRP: $422.50$338.00Cold Hammer Forging of barrels has been known for decades to produce the most accurate, longest lasting rifle barrels obtainable. The Cold Hammer Forging of barrels is accomplished through intense hydraulic pressure applied at opposing angles by carbide...MSRP: $422.50$338.00 -
DD BBL ASSY 5.56 1-7 14.5 LW MID
Daniel Defense
MSRP: $422.50$338.00Cold Hammer Forging of barrels has been known for decades to produce the most accurate, longest lasting rifle barrels obtainable. The Cold Hammer Forging of barrels is accomplished through intense hydraulic pressure applied at opposing angles by carbide...MSRP: $422.50$338.00 -
CMMG BBL BCG KIT 5 9MM 4140CM SBN
CMMG
MSRP: $476.69$379.00The CMMG 5" 9MM MkGs Barrel and BCG Kit allow you to build a Pistol Caliber Carbine using their patent-pending Radial Delayed Blowback System. Unlike typical direct blowback systems, their RDB uses a bolt that rotates and unlocks, slowing the BCG. This...MSRP: $476.69$379.00 -
CMMG BBL 300BLK 8 4140CM SBN
CMMG
MSRP: $198.28$152.00Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. ALL NFA RULES APPLYMANUFACTURER: CMMGMPN: 30D810AMODEL: 0Barrel Length: 8"Description: 4140CMFinish:...MSRP: $198.28$152.00 -
CMMG BBL AND BCG KIT 8 5.7X28MM
CMMG
MSRP: $482.99$412.00The 8" 5.7x28mm Barrel and BCG Kit is perfect for building an AR pistol or SBR in 5.7x28mm using CMMG's patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback not only reduces the weight in your...MSRP: $482.99$412.00 -
CMMG BBL AND BCG KIT 5 5.7X28MM
CMMG
MSRP: $476.69$402.00The 5" 5.7x28mm Barrel and BCG Kit is perfect for building an AR pistol or SBR in 5.7x28mm using CMMG's patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback not only reduces the weight in your...MSRP: $476.69$402.00 -
BALLISTIC BBL 86BLK 12 DRP PST PR B
Ballistic Advantage
MSRP: $308.75$247.00This 8.6 Blackout 12-inch barrel is machined from 416R Stainless Steel with a QPQ Corrosion-resistant finish. their Premium Black Series 8.6 Blackout Barrels are proof-fired and MPI-tested, ensuring the best quality and accuracy.MANUFACTURER: Ballistic...MSRP: $308.75$247.00 -
BALLISTIC BBL 8.6BLK 8 DRP PST PR B
Ballistic Advantage
MSRP: $302.81$243.00This 8.6 Blackout 8.3-inch barrel is machined from 416R Stainless Steel with a QPQ Corrosion-resistant finish. their Premium Black Series 8.6 Blackout Barrels are proof-fired and MPI-tested, ensuring the best quality and accuracy.MANUFACTURER: Ballistic...MSRP: $302.81$243.00 -
BALLISTIC BBL 308WIN 14.5 TAC GOV
Ballistic Advantage
MSRP: $261.25$209.00This .308 chambered (DPMS style) 14.5 inch Tactical Government Profile Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.MANUFACTURER: Ballistic AdvantageMPN:...MSRP: $261.25$209.00