This Colt manufactured magazine land spring is for the small frame Lightning slide action rimfire rifle and is in very good condition exhibiting a brownish gray patina with light wear. The magazine land spring mounts on the inside belly of the trigger plate and is under the magazine gate. (file photo)

Note: Colt small frame Lightning slide action rimfire rifles with the following serial numbers have been observed with this part: 8118, 11739, 20433, 35792, 37115 & 38674