Gives tm22 the ability to lock the bolt open without magazine and chamber flag, need my charging handle kit to work

Mounting instructions:

1.Remove the factory charging handle if havn' t already

2.Lock the bolt open with a magazine

3. Place the spring at the slot on the backside of the button

4. line up the assembly to the old charging handle slot and tap it in with a rubber mallet.  Make sure you start at the center

5. Check functions by pressing the button and pull out the magazine at the same time, the bolt should be locked back, and released when the charging handle is pulled. if you have a hard time releasing the bolt add some oil to the button and locking surface.

Some TM22 may have charging handle slot cut slightly bigger than average, if your kit wont stay in place apply some super glue on the lug that goes inside charging handle slot