The Magpul MOE M-LOK Hand-Guard for AR15/M4 rifles combines the light weight of a standard hand guard with modular flexibility.
Designed with versatility in mind, M-LOK slots at the two, six, and ten o'clock positions allow the attachment of optional 1913 Picatinny rail sections and other M-LOK accessories for the direct mounting of tactical lights, slings, grips, etc. Reinforced, heat-resistant polymer construction provides operational durability without the weight and expense of an aluminum rail hand guard. Front extensions and lower lip provides additional operator protection from hot front sight assembly.
Made in U.S.A.
The Magpul MOE M-LOK Hand-Guard for AR15/M4 rifles combines the light weight of a standard hand-guard with modular flexibility.
The Magpul MOE SL M-LOK compatible Hand-Guard for AR15/M4 rifles combines the lightweight of a standard hand-guard with modular flexibility for adding accessories like lights, bipods, and grips.
Designed with versatility in mind, M-LOK slots at the two, six, and ten o'clock positions allow the attachment of optional 1913 Picatinny rail sections and other M-LOK accessories for easy and direct mounting of your favorite accessories. Reinforced, heat-resistant polymer construction provides operational durability without the weight and expense of an aluminum rail hand guard. Front extensions and lower lip provides additional operator protection from hot front sight assembly.
The Geissele 9.3" Super Modular Rail (SMR) MK8 M-LOK® is designed for maximum modularity and precision. As one of the first handguards to integrate Magpul's M-LOK™ technology, this rail offers superior versatility and heat dissipation. The MK8’s vented design significantly reduces weight, ensuring a lightweight but rigid platform for tactical and competitive shooting applications. The proprietary 2.25" long barrel nut increases surface contact with the receiver, improving accuracy, durability, and zero repeatability after maintenance. Built from 7000 series aluminum and finished with a Type-3 hardcoat anodized finish, the Geissele MK8 M-LOK® handguard is engineered to withstand the harshest conditions while maintaining a sleek and streamlined profile.
The Geissele 13.5" Super Modular Rail (SMR) MK8 M-LOK® is designed for maximum modularity and precision. As one of the first handguards to integrate Magpul's M-LOK™ technology, this rail offers superior versatility and heat dissipation. The MK8’s vented design significantly reduces weight, ensuring a lightweight but rigid platform for tactical and competitive shooting applications. The proprietary 2.25" long barrel nut increases surface contact with the receiver, improving accuracy, durability, and zero repeatability after maintenance. Built from 7000 series aluminum and finished with a Type-3 hardcoat anodized finish, the Geissele MK8 M-LOK® handguard is engineered to withstand the harshest conditions while maintaining a sleek and streamlined profile.
The Geissele Super Modular Rail MK4 M-LOK® is engineered for shooters who demand strength, modularity, and performance. Designed for the rigors of duty and competition, this ultra-rugged rail provides integrated M1913 Picatinny sections at the fore of the 3, 6, and 9 o'clock positions, offering reliable attachment for lights, lasers, vertical grips, and other accessories. Maximized venting and precision-machined 7000 series aluminum ensure a rigid yet lightweight platform that handles high-heat environments with ease. The MK4 features Geissele’s proprietary 2.25" long barrel nut for increased surface contact with the receiver, delivering exceptional repeatability, rock-solid alignment, and enhanced accuracy retention. Whether you’re building a duty rifle, competition setup, or backcountry carbine, the MK4 M-LOK rail is ready to exceed your expectations.
The Geissele Super Modular Rail MK4 M-LOK® in Desert Dirt Color (DDC) is engineered for shooters who demand strength, modularity, and performance in a rugged finish. This ultra-durable handguard features integrated M1913 Picatinny sections at the fore of the 3, 6, and 9 o'clock positions, ideal for mounting lights, lasers, grips, and accessories. Maximized venting reduces weight and enhances heat dissipation, while its 7000 series aluminum construction delivers unmatched rigidity. The MK4’s proprietary 2.25" long barrel nut ensures exceptional alignment and accuracy retention. Finished in Geissele’s iconic DDC anodize, this rail not only performs but looks exceptional on any rifle. Built to go the distance and back, this rail is perfect for demanding shooters and professionals alike.
The Geissele 13.5" Super Modular Rail MK14 M-LOK® in Black offers a sleek, slim profile for rifle builders who value precision, modularity, and rigidity in their platform. Designed to minimize bulk and maximize comfort and control, the MK14 is crafted from robust 7000 Series Aluminum and Type 3 Hardcoat Anodized for superior wear resistance and durability. The MK14's reduced height and diameter make it ideal for shooters who prefer a more streamlined handguard. The long 2.25" Geissele barrel nut ensures secure and consistent mounting, increasing platform rigidity and ensuring repeatable accuracy even after disassembly. Integrated M-LOK® slots at the 3, 6, and 9 o'clock positions give you full control over accessory placement while keeping your setup lightweight. Whether you're a professional shooter, enthusiast, or competitor, the MK14 delivers Geissele’s signature strength and performance with a refined, low-profile silhouette.
The Geissele 13.5" Super Modular Rail MK4 M-LOK® – Black is purpose-built for unmatched durability and modularity. Designed with professional users in mind, this rail features integrated M1913 Picatinny sections at the 3, 6, and 9 o’clock positions for mounting mission-critical accessories. The MK4 also supports M-LOK® attachment slots and upper 45-degree quadrants, making it one of the most versatile options for the AR platform. Its robust 7000 Series Aluminum construction is finished with a mil-spec Type 3 Hardcoat Anodizing to stand up to the harshest environments. The proprietary 2.25” Geissele barrel nut increases surface contact with the receiver, delivering maximum strength, perfect alignment, and consistent repeatability—even through takedown and reassembly. Whether you're building a duty weapon or a competition rifle, the MK4 provides uncompromising rigidity, adaptability, and performance.
The Geissele 15" Super Modular Rail MK14 M-LOK® in Black offers a sleek, slim profile for rifle builders who value precision, modularity, and rigidity in their platform. Designed to minimize bulk and maximize comfort and control, the MK14 is crafted from robust 7000 Series Aluminum and Type 3 Hardcoat Anodized for superior wear resistance and durability. The MK14's reduced height and diameter make it ideal for shooters who prefer a more streamlined handguard. The long 2.25" Geissele barrel nut ensures secure and consistent mounting, increasing platform rigidity and ensuring repeatable accuracy even after disassembly. Integrated M-LOK® slots at the 3, 6, and 9 o'clock positions give you full control over accessory placement while keeping your setup lightweight. Whether you're a professional shooter, enthusiast, or competitor, the MK14 delivers Geissele’s signature strength and performance with a refined, low-profile silhouette.
The Geissele 9.3" Super Modular Rail MK14 M-LOK® is engineered for shooters who demand a slim, lightweight, and ultra-rigid rail system for their AR-15. Designed with precision and performance in mind, the MK14 features a reduced overall height and diameter to offer improved ergonomics while maintaining maximum strength. This handguard includes an updated version of Geissele’s proven 2.25" long barrel nut, creating a rock-solid interface with the upper receiver. The extended barrel nut increases surface contact for superior alignment and improved accuracy under stress. The rail is precision-machined from 7000 Series Aluminum and finished in a Type 3 Hardcoat Anodize for excellent durability. M-LOK® slots at the 3, 6, and 9 o'clock positions enable full modularity, allowing users to securely mount lights, bipods, sling attachments, and more. Built to exceed the needs of duty use and tactical shooters, the MK14 9.3" rail offers rugged reliability in a compact, mission-ready package.
The Geissele 9.3" Super Modular Rail MK16 M-LOK® - DDC is a professional-grade free float rail system engineered for durability, precision, and modular flexibility. Originally developed for the USASOC URG-I program, the MK16 rail has earned its place in some of the most elite military applications. Manufactured from 7000 Series Aluminum, the MK16 offers the optimal balance of strength and weight, while its Type 3 Hardcoat Anodized Desert Dirt Color (DDC) finish ensures lasting durability under harsh conditions. The rail secures to your upper receiver using Geissele’s updated 2.25” barrel nut, offering unmatched rigidity and alignment. Anti-rotation tabs and twin set screws guarantee that the handguard stays locked down, even under high-stress use. Featuring M1913 Picatinny rail sections at 12 o’clock and M-LOK® compatibility on every quadrant, this rail delivers full modularity for modern mission-ready builds. Whether for tactical applications, competition, or advanced personal builds, the MK16 is a battle-proven solution with heritage and performance built in.
The Geissele 9.3" Super Modular Rail MK16 M-LOK® - Black delivers unmatched durability, performance, and modularity in a compact length. Originally developed for USASOC’s URG-I program, the MK16 rail is trusted by America’s elite warfighters and now available for civilian use. Featuring a full-length 1913 Picatinny top rail and M-LOK® slots on every quadrant, this rail is built to accommodate any mission-specific accessory while keeping your rifle lightweight and sleek. The proprietary 2.25" Geissele barrel nut ensures maximum surface contact with the upper receiver, resulting in an ultra-rigid, rock-solid mounting interface and repeatable zero. CNC-machined from 7000 Series Aluminum and finished in Type 3 Hardcoat Anodized Black, the MK16 rail is designed to withstand extreme conditions while maintaining superior ergonomics and performance. Anti-rotation tabs and precision fitment ensure this rail won’t move under stress, making it ideal for demanding shooters and professional users alike.
The Geissele 10.5" Super Modular Rail MK16 M-LOK® - Black delivers unmatched durability, performance, and modularity in a compact length. Originally developed for USASOC’s URG-I program, the MK16 rail is trusted by America’s elite warfighters and now available for civilian use. Featuring a full-length 1913 Picatinny top rail and M-LOK® slots on every quadrant, this rail is built to accommodate any mission-specific accessory while keeping your rifle lightweight and sleek. The proprietary 2.25" Geissele barrel nut ensures maximum surface contact with the upper receiver, resulting in an ultra-rigid, rock-solid mounting interface and repeatable zero. CNC-machined from 7000 Series Aluminum and finished in Type 3 Hardcoat Anodized Black, the MK16 rail is designed to withstand extreme conditions while maintaining superior ergonomics and performance. Anti-rotation tabs and precision fitment ensure this rail won’t move under stress, making it ideal for demanding shooters and professional users alike.
The Geissele Super Modular Rail MK16 in 13.5" length offers unmatched performance for demanding shooters. Precision machined from high-strength 7000 Series Aluminum and finished in rugged Type-3 Hardcoat Anodize, this DDC rail is ideal for customization and durability. It mounts securely with the proven Geissele Barrel Nut design, featuring anti-rotation tabs and set screws for ultimate rigidity. M-LOK slots on all sides and a full-length Picatinny top rail make it mission-ready.
Note: First-time Geissele rail customers must purchase a Barrel Nut Wrench for proper installation.
Gen 2 Enhanced M-LOK Hand-guards are now available! Changes include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail.Our Enhanced M-LOK (EM) Hand-guards provide a lightweight free float design for your custom AR15 build. The M-LOK system allows advanced modularity past the current 1913 picatinny rail system. Machined to mil-spec dimensions and engineered to perfection, this hand-guard eliminates bulk while retaining strength and stability.
Quantum Series M-LOK Hand-guards minimize bulk and weight, while providing an adaptive free float design that is big on features. With multiple mounting options, this affordable, rigid system can adapt to any mission. Machined to exacting dimensions from 6061-T6 aluminum it is the perfect hand-guard for your next AR15 build.
The Aero Precision APRA100206C is a 15 inch AR15 Enhanced Quad Rail Gen 2 handguard in anodized black. It is built for AR-15 owners who want a free-float handguard with 1913 Picatinny rail space, a continuous top rail, sling QD sockets, low-profile gas-block compatibility, and the Aero Enhanced / BAR mounting interface.
This is the rail for the buyer who still wants the strength, accessory compatibility, and familiar layout of a quad rail instead of a slimmer M-LOK-only handguard. Lights, lasers, vertical grips, hand stops, bipods, sling mounts, and other Picatinny accessories can mount directly without needing separate rail sections.
This handguard uses Aero Precision's Enhanced / BAR interface. It is a natural match for the Aero M4E1 Enhanced Upper Receiver because that upper has the enhanced handguard mounting surface built into the receiver. When used with the proper M4E1 Enhanced upper, the rail installs without needing a separate BAR barrel nut.
If the build uses a standard threaded AR-15 upper receiver, this handguard will not mount to a normal AR-15 barrel nut. A compatible Aero Precision AR15 BAR Barrel Nut and shims are required for standard threaded upper installation. Confirm the upper receiver type and mounting parts before ordering.
The reason to choose this handguard is direct Picatinny mounting. A quad rail is not always the lightest or slimmest option, but it gives the builder immediate 1913 rail compatibility at the 12, 3, 6, and 9 o'clock positions. That makes sense for a rifle that will carry multiple accessories, use existing Picatinny-mounted gear, or be built around a more traditional duty-style layout.
Aero's Gen 2 design reduces some of the bulk normally associated with quad rails by removing portions of the 3, 6, and 9 o'clock rail in the rear gripping area. That gives the rail a more comfortable hand position while keeping Picatinny mounting space where it is most useful.
The 15 inch length is best suited to longer AR-15 builds where the shooter wants extended hand placement, a long top rail, and coverage over a low-profile gas block. It pairs naturally with many 16 inch and longer barrels, especially modern AR builds where the handguard runs close to the muzzle device.
Before selecting a 15 inch handguard, confirm barrel length, gas-system length, muzzle-device length, suppressor plan, gas-block height, and where the muzzle threads will sit relative to the end of the rail. A long handguard can be excellent on the right build, but it should be matched to the barrel and muzzle setup intentionally.
Aero lists the Gen 2 Enhanced Quad Rail with a 1.72 inch inside diameter from the barrel nut cut to the forward end and a 1.78 inch inside diameter in the barrel nut cut area. That gives the builder room for many muzzle devices and some 1.5 inch outside-diameter suppressors, depending on the full build layout.
Do not assume every suppressor, blast device, muzzle brake, or suppressor mount will fit inside the rail. Confirm suppressor outside diameter, mount diameter, heat clearance, access to locking collars or latches, barrel length, thread location, and whether the suppressor manufacturer allows that mounting configuration before firing.
This handguard is specific to the AR15 / M4E1 platform. It is not compatible with Aero's M5 .308 / M5E1 platform. Builders working on a large-frame .308, 6.5 Creedmoor, or M5 pattern rifle need an M5-compatible handguard instead.
For an AR-15 build, confirm the receiver type, barrel nut requirement, gas block size, gas tube length, muzzle setup, accessory layout, and torque procedure before installation. This is a strong choice when the goal is a long, rugged, Picatinny-ready AR-15 handguard built around the Aero Enhanced mounting system.
This handguard is a good fit for an AR-15 builder who wants a 15 inch free-float quad rail with direct Picatinny accessory mounting, a continuous top rail, Gen 2 ergonomic improvements, and Aero M4E1 Enhanced / BAR interface compatibility. It works especially well for builds that will use lights, grips, bipods, sling hardware, or other 1913-mounted accessories.
It is less suitable for the buyer who wants the lightest possible minimalist handguard, a standard handguard that works with a normal AR-15 barrel nut, an M5 / AR-10 handguard, or a short rail for a compact barrel. The value here is the specific combination of 15 inch length, quad-rail utility, Aero Enhanced mounting, anodized black finish, 6061-T6 aluminum construction, and Gen 2 handguard refinements.
