What rifle does the Gunny have here?

[CV32]

 

[tiriaq]

Looks like a trade gun.

 

[Musketfire]

Looks like a octagon full stock short rifle "like a gussied up traditions tennessee" with one of the old Miroku flat minute man locks on it.....those are real sparky locks.....

 

[CV32]

I wondered if the photo was from his TV series Lock 'N Load but the firearm doesn't look like anything he has done there. Might be wrong.