A Picatinny rail has a unique cross-section that allows it to interface with a variety of devices and accessories. Some of the most popular Picatinny slots are M-Lok slots.
A M-Lok slot is a type of slot that is found on firearms that are made to accept various accessories, like optics and lasers. There are typically two M-Lok slots on a firearm, one on the barrel and one on the handguard. .
There are nine Picatinny slots total on a M-Lok handguard. The slots are spaced evenly around the circumference of the handguard, making them easy to access.
The slots are also spaced close together, which makes them ideal for mounting accessories like optics or lasers.
The Picatinny rail has a total of thirteen slots, which is enough space to mount most accessories. The only accessory that might not fit is a large optic like an ACOG scope.
If you need more than thirteen slots for your accessory system, you will need to look into a different type of rail system.
