Instillation and setting up was straight forward and material used is of high quality. All parts necessary for installation was included. The multi-shot works great with the Marauder magazines and are a good choice for the product. Enjoy shooting using multi-shot.

this breech was a gem to install it was easy and quick. I found the method for sealing the barrel to the breech interesting and a design that makes the system work more efficiently and effectively. Before on my Crosman 2240 I had a steel breech and it gave an average of 454 feet per sec. on Krono after installing the GMAC multi shot breech I was getting readings that averaged about 540 ft per sec.

Took a while to decide to do the upgrade but so glad I did , fitting was straight forward the action is flawless and the mags work really well , you only get one in the kit so I purchased a spare .
Don’t forget to purchase the necessary barrel band , as the new breech raises the barrel slightly.
If your thinking of getting one stop thinking and get it ,it’s superb