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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KDG SCAR MREX MARK II MLOK 6.5 BLK
Kinetic Development Group LLC
MSRP: $404.66$333.00The SCAR MREX (Modular Receiver Extension) has successfully served the shooting community and Special Operations units in combat for years. The MREX has made the SCAR 16 and 17 a more versatile modular platform, accommodating a variety of accessories...MSRP: $404.66$333.00 -
GEISSELE 15 SUPER MOD MK8 MLOK BLK
Geissele Automatics
MSRP: $414.38$332.00The Super Modular Rail (SMR) MK8 M-LOK is Geissele's ultra-modular handguard model. The SMR MK8 is one of the first rails available to utilize the Magpul M-LOK technology. These rails are designed to give the user full modularity while maintaining a...MSRP: $414.38$332.00 -
GEISSELE 9.3 SUPER MOD MK8 MLOK DDC
Geissele Automatics
MSRP: $382.50$306.00The Super Modular Rail (SMR) MK8 M-LOK is Geissele's ultra-modular handguard model. The SMR MK8 is one of the first rails available to utilize the Magpul M-LOK technology. These rails are designed to give the user full modularity while maintaining a...MSRP: $382.50$306.00 -
GEISSELE 9.3 SUPER MOD MK8 MLOK BLK
Geissele Automatics
MSRP: $350.63$281.00The Super Modular Rail (SMR) MK8 M-LOK is Geissele's ultra-modular handguard model. The SMR MK8 is one of the first rails available to utilize the Magpul M-LOK technology. These rails are designed to give the user full modularity while maintaining a...MSRP: $350.63$281.00 -
GEISSELE 15 SUPER MOD MK4 MLOK DDC
Geissele Automatics
MSRP: $446.25$357.00Versatile and innovative, Geissele's MK4 DDC Super Modular Rail is a perfect addition to any AR-platform. It features a full length picatinny rail with more than enough space for optics, iron sights, and clip-on night vision/thermal devices. Additional...MSRP: $446.25$357.00 -
GEISSELE 15 SUPER MOD MK4 MLOK BLK
Geissele Automatics
MSRP: $414.38$332.00The Super Modular Rail (SMR) MK4 M-LOK is Geissele's ultra-lightweight M-LOK handguard option. These rails are purpose-built and feature integrated short M1913 picatinny rail sections at the fore of the rail in the 3, 6, and 9 o'clock positions. Maximum...MSRP: $414.38$332.00 -
GEISSELE 13.5 SPR MOD MK4 MLOK DDC
Geissele Automatics
MSRP: $414.38$332.00The Super Modular Rail (SMR) MK4 M-LOK is Geissele's ultra-lightweight M-LOK handguard option. These rails are purpose-built and feature integrated short M1913 picatinny rail sections at the fore of the rail in the 3, 6, and 9 o'clock positions. Maximum...MSRP: $414.38$332.00 -
GEISSELE 13.5 SPR MOD MK4 MLOK BLK
Geissele Automatics
MSRP: $382.50$306.00The Super Modular Rail (SMR) MK4 M-LOK is Geissele's ultra-lightweight M-LOK handguard option. These rails are purpose-built and feature integrated short M1913 picatinny rail sections at the fore of the rail in the 3, 6, and 9 o'clock positions. Maximum...MSRP: $382.50$306.00 -
GEISSELE 9.3 SUPER MOD MK4 MLOK DDC
Geissele Automatics
MSRP: $382.50$306.00The Super Modular Rail (SMR) MK4 M-LOK is Geissele's ultra-lightweight M-LOK handguard option. These rails are purpose-built and feature integrated short M1913 picatinny rail sections at the fore of the rail in the 3, 6, and 9 o'clock positions. Maximum...MSRP: $382.50$306.00 -
GEISSELE 15 SMR MK16 MLOK BLK
Geissele Automatics
MSRP: $414.38$332.00The Geissele Super Modular Rail MK16 offers unmatched performance for the most demanding shooters. Mounted to your AR-15 upper using the updated version of the proven Geissele Barrel Nut design, the MK16 is not only easy to install and maintain, but...MSRP: $414.38$332.00 -
GEISSELE 10 SUPER MOD MK4 FED DDC
Geissele Automatics
MSRP: $510.00$408.00This is the same rail used to fullfill contracts for the Federal Bureau of Investigation (FBI). It's strength, modularity and M-Lok compatibility gives users the capabilities needed to successfully complete the mission at hand.MANUFACTURER: Geissele...MSRP: $510.00$408.00 -
GEISSELE 13.5 SMR MK16 MLOK BLK
Geissele Automatics
MSRP: $414.38$332.00The Geissele Super Modular Rail MK16 offers unmatched performance for the most demanding shooters. Mounted to your AR-15 upper using the updated version of the proven Geissele Barrel Nut design, the MK16 is not only easy to install and maintain, but...MSRP: $414.38$332.00