MPA .460 Rowland Upper with 6″, 10″ or 16″ Barrels

Convert your MPA10T-A or MPA10SST-A to a 460 Rowland* Replace your 45 ACP Upper with a 460 Rowland Upper and fire 460 Rowland Ammo. That’s it. The 45 ACP bolt works with both Uppers. Put the 45 ACP Upper back on and fire 45 ACP Ammo. *45 ACP Ammo cannot be fired in the 460 [...]