The CMMG 7-Slot M-LOK Accessory Rail Kit (brand part no. 55AFE77) attaches to standard M-LOK handguard slots to add a short run of 1913 Picatinny rail for mounting accessories that require true Picatinny attachment, such as certain lights, lasers, or iron sights. CMMG builds this kit as a simple bolt-on section rather than a full replacement rail, letting M-LOK handguard owners add Picatinny compatibility only where they need it instead of running rail the full length of the handguard. At 7 slots, it provides enough Picatinny real estate for most single-accessory mounting needs without adding excess length or weight.

Key Specifications

• Attaches directly to standard M-LOK handguard slots.
• Provides 7 slots of true 1913 Picatinny rail once installed.
• Mounts standard Picatinny-pattern accessories not compatible with bare M-LOK.
• Sold as a standalone rail section, separate from the handguard itself.
• Installs with standard M-LOK hardware included.

Frequently Asked Questions

Will this work on a KeyMod handguard? No, this rail kit is built specifically for M-LOK slots and will not attach to KeyMod-pattern handguards.

Why would I need this if my handguard already has M-LOK slots? Some accessories, like certain iron sights or specific lights, require a true Picatinny rail interface rather than a direct M-LOK mount; this kit adds that interface exactly where needed.

Buy the CMMG 7-Slot M-LOK Accessory Rail Kit

Add Picatinny compatibility exactly where you need it with this CMMG kit from our AR handguards lineup. Order it from our Lubbock, Texas gun shop for fast, direct shipping to your door.