If it's drilled and tapped, a Burris FFII with the weaver/pic mount would go nicely. Alot of us run them.
Pros:
Light weight
great batt life
small size
waterproof
automatic brightness
no parallax
Put dot on his head and pull the trigger
Cons:
It is batt operated
Have to remove it to replace batt
PITA to zero, terrible adjustments. Once it's on and locked, you're good to go.
The dot is larger than the stated 4MOA
The dot is blurry on all of mine, but it does the job.