.22 Conversion Kit for the M-11/9.

M-11/22 .22 Conversion

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The M-11/22 is a .22 LR Sub-Caliber conversion device for use with an M-11/9 upper receiver.


Uses .22 LR ammunition allowing inexpensive practice, training and casual shooting.

"Drop in" installation requires no modification to the upper or lower receiver.

40 round polymer magazine.

Rate of fire is between 800 and 900 rounds per minute.

The kit consists of the following components:

1) Bolt Assembly

2) Barrel Insert and Ejector Plate

3) 40 Round Magazine

4) Magazine Loader

5) Magazine Cleaning Brush (not shown)


The M-11/22 is designed to use .22 Long Rifle ammunition. The recommended ammunition is Remington Golden 36 Gr. .22 Long Rifle. Use only bright and shiny ammunition of recent manufacture.

The following ammo also works very well with the M-11/22:

Winchester Super-X, 40 Grain 1300 FPS #X22LRSS1
CCI Mini-Mag HP, 36 Grain, 1260 FPS #0031
CCI Stinger, 32 Grain 1640 FPS #0050

Use only plated bullets to minimize leading of the barrel. Use of other ammunition may cause unreliable performance.

Use with a Suppressor

A 9mm suppressor can be used with the .22 kit but the 9mm suppressor will need to be cleaned after use to insure lead build up does not obstruct the baffle holes.
If your 9mm suppressor has a warranty from the manufacturer, check with them to see if using .22 LR ammunition with their suppressor will void the warranty.
For use with a .22 suppressor, the barrel insert will need to have a thread adapter fitted to it by a qualified Gunsmith.
Use with a suppressor will accelerate the rate of fouling of the bolt face area and the magazines.

Cleaning, Lubrication and Maintenance

Recommended cleaning interval is 500 rounds. More frequent cleaning may be required with suppressor use.


The M-11/22 is designed to use the original low profile "Hockey Puck" style cocking knob. Other aftermarket cocking knobs may add additional weight to the bolt assembly and affect performance.

The kit works well with aftermarket sidecocking upper receivers, but the rate of fire will be a little higher.

The semi-auto function of the M-11/9 will not work, with this kit installed.

Click hear to see video of M-11/22, burst fire and Mag' Dump (8.5 Meg)

Click hear to see video of M-11/22 Suppressed, burst fire and Mag' Dump (7.8 Meg)

Click hear to see video of Dual Wielding M-11/22s (2.95 Meg)

Click here to see development history of the M-11/22 and MAX-11/22 kit.

Note: All prices are subject to change without notice.