[Kamakazee]

Or it was sold to me as a MK ll
The stamping on the top of the barrel;

SWD, INC. ATL. GA.
M. RP, .22 LR
SN P###

I know the lower is Ruger but I suspect the upper isn't.
I found the first markings are I think,
INGRAM MILITARY ARMAMENT Corp. ATL, GA


Any help would be appreciated

I would post a pic if I could figure out how