Geissele Automatics121688074
Geissele 15" MK16 M-LOK Super Modular Rail - Precision AR-15 Handguard$400.00
Availability: In Stock
The Geissele 13.5" Super Modular MK8 M-LOK handguard is a free-float AR-15 rail system built for shooters who demand both precision and customization. Geissele's modular approach lets you configure your platform exactly how you want it—whether you're setting up a long-range precision rifle, a competition gun, or a tactical carbine. The MK8 uses Magpul's M-LOK mounting standard at the 3, 6, and 9 o'clock positions as well as the upper 45-degree quadrants, giving you flexible attachment points for lights, grips, bipods, and other accessories without the weight penalty of full Picatinny rail coverage.
One of the standout features is the engineering at the lower 45-degree quadrants—aggressive ventilation there keeps weight down and lets heat dissipate quickly if you're running suppressed or pushing rounds downrange fast. The 13.5-inch length strikes a balance for mid-length builds, offering plenty of rail real estate while keeping your overall package handy. Geissele's proprietary 2.25-inch barrel nut significantly increases the contact surface between the handguard and receiver, which translates to a rigid platform that stays straight and true shot after shot. That matters if you care about zero repeatability between disassembly and maintenance—your scope return to zero when you reassemble.
Installation requires a Geissele barrel nut wrench (sold separately). The rail comes with the barrel nut included, so you're not buying additional hardware, just the tool needed to do the job right. At 13.1 ounces with hardware, this is a serious piece of gear that won't bloat your rifle's weight budget.
| Length | 13.5 inches |
| Height | 2.3 inches |
| Inner Diameter | 1.35 inches |
| Outer Diameter | 2.11 inches |
| Weight with Hardware | 13.1 oz |
| Mounting Standard | Magpul M-LOK |
| Includes | Barrel nut |
| Requires | Geissele barrel nut wrench (sold separately) |
The Geissele 13.5" MK8 is designed as a free-float AR-15 rail system. It mounts using Geissele's proprietary barrel nut and is compatible with standard AR-15 receivers.
Yes. Installation requires a Geissele barrel nut wrench, which is sold separately. The barrel nut itself is included with the handguard.
The handguard comes with the barrel nut. The barrel nut wrench required for installation is sold separately.
The 13.5" MK8 weighs 13.1 ounces with all hardware included.
SKU: 115828077 • Width: 4.4in • Height: 4.3in • Depth: 14.7in • Weight: 1.3oz
Availability: In Stock
The Geissele 13.5" Super Modular MK8 M-LOK handguard is a free-float AR-15 rail system built for shooters who demand both precision and customization. Geissele's modular approach lets you configure your platform exactly how you want it—whether you're setting up a long-range precision rifle, a competition gun, or a tactical carbine. The MK8 uses Magpul's M-LOK mounting standard at the 3, 6, and 9 o'clock positions as well as the upper 45-degree quadrants, giving you flexible attachment points for lights, grips, bipods, and other accessories without the weight penalty of full Picatinny rail coverage.
One of the standout features is the engineering at the lower 45-degree quadrants—aggressive ventilation there keeps weight down and lets heat dissipate quickly if you're running suppressed or pushing rounds downrange fast. The 13.5-inch length strikes a balance for mid-length builds, offering plenty of rail real estate while keeping your overall package handy. Geissele's proprietary 2.25-inch barrel nut significantly increases the contact surface between the handguard and receiver, which translates to a rigid platform that stays straight and true shot after shot. That matters if you care about zero repeatability between disassembly and maintenance—your scope return to zero when you reassemble.
Installation requires a Geissele barrel nut wrench (sold separately). The rail comes with the barrel nut included, so you're not buying additional hardware, just the tool needed to do the job right. At 13.1 ounces with hardware, this is a serious piece of gear that won't bloat your rifle's weight budget.
| Length | 13.5 inches |
| Height | 2.3 inches |
| Inner Diameter | 1.35 inches |
| Outer Diameter | 2.11 inches |
| Weight with Hardware | 13.1 oz |
| Mounting Standard | Magpul M-LOK |
| Includes | Barrel nut |
| Requires | Geissele barrel nut wrench (sold separately) |
The Geissele 13.5" MK8 is designed as a free-float AR-15 rail system. It mounts using Geissele's proprietary barrel nut and is compatible with standard AR-15 receivers.
Yes. Installation requires a Geissele barrel nut wrench, which is sold separately. The barrel nut itself is included with the handguard.
The handguard comes with the barrel nut. The barrel nut wrench required for installation is sold separately.
The 13.5" MK8 weighs 13.1 ounces with all hardware included.
SKU: 115828077 • Width: 4.4in • Height: 4.3in • Depth: 14.7in • Weight: 1.3oz