Here are some specs for the Marlin 81-DL bolt action rimfire rifle:
Date made: Around 1964
Place made: United States
Overall measurements: 42 7/8 in x 2 5/8 in
Type: Bolt action rifle
Caliber .22 in 
The Marlin 81-DL is part of the National Museum of American History's collection
 
Firearm purchases require a background check and must be picked up in person by the purchaser
SBR transfers will not be accepted