Crosman 338 barrel extendtion mod

[Septicdeath]

The model 338 is a BB caliber semi automatic.The 338 is a replica of the Walther P38 military pistol. Produced 1987-1991
Velocity tested at around 363 fps.
.177 BB
CO2 12 gram
Semi-Auto 2.5 inch smoothbore barrel.
20 Shot Magazine
gun tested at 363 fps
The 338 pistol I modified is the same pistol which I extended the barrel to 5.5 inches. The seals also replaced.
Velocity tested at around 393 fps
177 BB
CO2 12 gram
Semi-Auto 5.5 inch smoothbore barrel.
20 Shot Magazine
gun tested at 393 fps,