do you mean something such as
ww.amazon.ca/UTG-Profile-Airgun-Picatinny-Adaptor/dp/B001CJ67E6/ref=sr_1_48?ie=UTF8&qid=1432069424&sr=8-48&keywords=mosin
EDIT:
Or this:
ww.pyramydair.com/s/a/Leapers_Accushot_1_Pc_Bi_directional_Offset_Mount_w_1_Rings_High_11mm_Dovetail/2409
Those are 2 bases I used that held solid. Also didn't need to do anything to the handguard. Anything else will be too long.






















































