Geissele Automatics Super Modular Rail MK16 AR-15 Handguard – 13.5" M-LOK, Black

Geissele Automatics Super Modular Rail MK16 AR-15 Handguard – 13.5" M-LOK, Black

The Geissele Automatics Super Modular Rail MK16 is a 13.5" AR-15 handguard built for rigid, adaptable accessory mounting. Precision machined from 7000 Series aluminum and finished in black Type III hardcoat anodizing, the MK16 combines a full-length M1913 top rail with M-LOK slots on every quadrant for a clean, capable rifle setup.

Rigid Free-Float Rail Design

The MK16 mounts to a compatible AR-15 upper using an updated version of Geissele’s proven barrel nut design. Anti-rotation tabs and set screws help secure the rail during use, while the free-float configuration provides a stable handguard platform for compatible rifles.

M-LOK Accessory Mounting on Every Quadrant

M-LOK slots positioned around the handguard give builders flexibility to add compatible lights, sling mounts, vertical grips, hand stops, and other accessories where they are needed. A continuous M1913 Picatinny top rail supports compatible optics, iron sights, and rail-mounted accessories.

7000 Series Aluminum Construction

Machined from 7000 Series aluminum, the Super Modular Rail MK16 is designed to balance strength, rigidity, and practical weight for AR-15 builds. The Type III hardcoat anodized black finish provides durable protection and a professional appearance.

Key Features

• Geissele Automatics Super Modular Rail MK16
• Designed for compatible AR-15 upper assemblies
• 13.5" handguard length
• 7000 Series aluminum construction
• Black Type III hardcoat anodized finish
• M-LOK slots on every quadrant
• Full-length M1913 Picatinny top rail
• Updated Geissele barrel nut mounting design
• Anti-rotation tabs and set screws for secure installation

Specifications

• Brand: Geissele Automatics
• Model: MK16 / Super Modular Rail
• Product Type: AR-15 handguard
• Platform: AR-15
• Length: 13.5"
• Material: 7000 Series aluminum
• Finish: Type III hardcoat anodized
• Color: Black
• Mounting Interface: M-LOK
• Top Rail: M1913 Picatinny
• Manufacturer Part Number: 05-650B
• UPC: 817953027134
• Subcategory: Handguards & Forends

Compatibility

• Designed for compatible AR-15 upper receiver assemblies
• Uses Geissele’s updated barrel nut mounting design
• Accepts compatible M-LOK accessories
• Accepts compatible M1913 Picatinny rail-mounted accessories along the top rail

Not Compatible With

• AR-10, LR-308, and other large-frame platforms unless specifically verified by the manufacturer
• Non-AR-15-pattern upper receiver configurations
• Accessories using mounting interfaces other than M-LOK or M1913 Picatinny without an appropriate adapter

Important Notes

• Verify barrel nut, upper receiver, barrel, gas system, and accessory compatibility before installation.
• Confirm that the 13.5" handguard length provides appropriate clearance for your selected barrel and muzzle device configuration.
• Follow manufacturer installation instructions and use proper assembly procedures.

Frequently Asked Questions

What is the length of the Geissele MK16 handguard?

This Super Modular Rail MK16 measures 13.5" in length.

What accessory mounting system does the MK16 use?

The handguard has M-LOK slots on every quadrant and a full-length M1913 Picatinny rail across the top.

What is the MK16 handguard made from?

It is precision machined from 7000 Series aluminum.

What finish does this Geissele MK16 rail have?

It features a black Type III hardcoat anodized finish.

Does the MK16 have a Picatinny rail?

Yes. The top of the handguard features a continuous M1913 Picatinny rail for compatible optics, sights, and accessories.

How is the rail secured to the upper assembly?

The MK16 uses an updated Geissele barrel nut design along with anti-rotation tabs and set screws for secure installation.

Will this handguard fit every AR-style rifle?

No. It is designed for compatible AR-15 upper assemblies. Verify all receiver, barrel nut, barrel, gas system, and clearance requirements before purchase.

What is the manufacturer part number for this rail?

The manufacturer part number is 05-650B.

Configure Your AR-15 with a Purpose-Built Geissele Rail

For a durable, adaptable handguard with extensive M-LOK mounting space and a continuous top rail, the Geissele Super Modular Rail MK16 is a strong choice for a compatible AR-15 build. Confirm your component fitment, then equip your rifle with a rigid 13.5" Geissele rail designed for serious use.