This is the CF-W 9mmA bolt. This will allow you to shoot 9mm at approximately 950 RPM thru your original M11A1 machine gun. In order for this to work, you must replace your .380 barrel with a 9mm barrel and since they are both the same length and trunion threads it will go right in. This bolt is drop-in meaning it comes complete with and ready to run. We have replacement barrels in stock with either the standard M11/9 barrel or our “shorty” 4 1/2″ barrel with 1/2 x 28 threads. For more details see our page for the original CF-W Bolt.
This bolt will also run in an M11/9 and does reduce the speed, but not as much and the original CF-W M11/9 bolt.
Please contact us for additional shipping insurance.