This Ruger manufactured late variation piston measures 1/2" in length and is for the later model 44 semi-auto carbine. This late variation pistol is in very good condition with light wear. (file photo)
Note: Ruger model 44 semi-auto carbines with the following serial numbers have been observed with this late variation piston:
No Prefix: 107880 & 11429
100 Prefix: 100-09871, 100-13353 & 100-36694
102 Prefix: 102-06552, 102-23818, 102-51716 & 102-67115