You can buy them, expect to pay somewhere between $1,300 and $1,600. There are 2 models available the Model A and the Model B. They changed the Model A to the B because THEY thought it was too easy to convert to full auto. Either will do the job. Mags are plentiful and you wont have any problems firing any ammo and you really dont even need to clean it but once a year if you shoot alot. Great gun with a proven track record.