This Colt manufactured 36" (plus or minus) long magazine spring is for the medium frame Lightning slide action rifle in 38-40 or 44-40 caliber with a 25 1/2" long full length magazine tube and is in good condition with light wear. (file photo)
Note: Colt medium frame Lightning slide action centerfire rifles with the following serial numbers have been observed with this part:
38-40: 27311
44-40: 28897
