Here's the gun's specifications.
Specifications:
Chamber: 2" x 12"
Barrel: 3/4" x 12.5"
Internal Barrel: 3/4 x 9"
Effective Chamber: (2.049" x 9") - (1.050" x 9") About 21.88 in^3
Pictures:
2" Coaxial Rear:

2" Coaxial Front:

2" Coaxial Complete:

Possible 1" BST Pilot:

I'm planning on shooting C cells, 12gram CO2 cartridges, or paintballs.... The only bad thing about paintball that the projectile (paintball) will start 9 inches up the barrel...



