The Magpul M-LOK Thumb Shelf in flat dark earth (Magpul part no. MAG1566-FDE) is a low-profile handstop built to mount directly to any M-LOK-compatible handguard slot, giving shooters a consistent index point for a thumb-over-bore grip technique. Rather than a full vertical grip, the Thumb Shelf adds just enough of a ledge to register hand position without adding bulk or weight to the handguard. It’s a simple, low-cost accessory for shooters who want a repeatable support-hand placement without committing to a larger foregrip.

Key Specifications

• Mounts directly to any M-LOK-compatible handguard slot.
• Built as a low-profile handstop rather than a full vertical grip.
• Supports a thumb-over-bore grip technique with a consistent index point.
• Finished in flat dark earth.
• Manufactured by Magpul Industries as part of its M-LOK accessory lineup.

Frequently Asked Questions

Does this attach to Picatinny rail, or only M-LOK? This model is built for M-LOK-compatible handguard slots.

Is this a full vertical grip or a smaller handstop? It’s a low-profile handstop, not a full vertical grip.

Buy the Magpul M-LOK Thumb Shelf

Add a consistent thumb-over-bore index point without extra bulk on your handguard. Order it from our Magpul Industries lineup of rifle accessories and parts, shipped fast from our Lubbock, Texas gun shop.