Description
Arisaka Defense MMA40 is an M-Lok to M-Lok adapter that adds three half M-Lok slots with a 40-degree offset. It helps mount accessories on handguards that do not have M-Lok slots at the 1:30 and 10:30 clock positions. It can also be used with M-Lok slots at 6 o’clock and a vertical grip to angle a grip out to one side.
Key details
- Provides three half M-Lok slots at a 40-degree offset.
- Designed to add slot positions where they are missing on some handguards.
- Works for mounting a Unity Hot Button on one side for thumb activation.
- Can be used at 6 o’clock with a vertical grip to angle a grip outward.
| Finish | Black anodized |
|---|---|
| Mounting | M-Lok to M-Lok |
| Offset | 40 degrees |





