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
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 -
Out of stock
GEISSELE 13.5 SPR MOD MK8 MLOK DDC
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 -
Out of stock
GEISSELE 13.5 SPR MOD MK8 MLOK BLK
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 -
Out of stock
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 -
Out of stock
GEISSELE 9.3 SUPER MOD MK4 MLOK BLK
Geissele Automatics
MSRP: $350.63$281.00The 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: $350.63$281.00 -
Out of stock
GEISSELE 10.5 SMR MK16 MLOK DDC
Geissele Automatics
MSRP: $446.25$357.00The 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: $446.25$357.00 -
Out of stock
GEISSELE 10 SUPER MOD MK4 FED ODG
Geissele Automatics
MSRP: $510.00$408.00Geissele's Super Modular MK4 Rail is used by the Federal Bureau of Investigation due to its strength, modularity, and M-LOK compatibility. It features M1913 picatinny rails in the 6 o'clock and 12 o'clock positions, as well as shorter M1913 picatinny...MSRP: $510.00$408.00 -
Out of stock
GEISSELE 10 SUPER MOD MK4 FED BLK
Geissele Automatics
MSRP: $478.13$383.00This is the same rail used to fulfill 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.These rails are...MSRP: $478.13$383.00 -
Out of stock
GEISSELE 15 SPR MOD MK14 MLOK DDC
Geissele Automatics
MSRP: $446.25$357.00Geissele's Super Modular Rail (SMR) MK14 M-LOK handguard is the latest entry to the Geissele line-up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height to create a slimmer package. Included with the MK14 Super...MSRP: $446.25$357.00 -
Out of stock
GEISSELE 15 SUPER MOD MK14 MLOK BLK
Geissele Automatics
MSRP: $414.38$332.00Geissele's Super Modular Rail (SMR) MK14 M-LOK handguard is the latest entry to the Geissele line-up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height to create a slimmer package. Included with the MK14 Super...MSRP: $414.38$332.00 -
Out of stock
GEISSELE 13.5 SPR MOD MK14 MLOK DDC
Geissele Automatics
MSRP: $382.50$306.00Geissele's Super Modular Rail (SMR) MK14 M-LOK handguard is the latest entry to the Geissele line-up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height to create a slimmer package. Included with the MK14 Super...MSRP: $382.50$306.00 -
Out of stock
GEISSELE 9.3 SPR MOD MK14 MLOK BLK
Geissele Automatics
MSRP: $350.63$281.00Geissele's Super Modular Rail (SMR) MK14 M-LOK handguard is the latest entry to the Geissele line-up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height to create a slimmer package. Included with the MK14 Super...MSRP: $350.63$281.00