These Ruger manufactured inner and outer piston block plug retaining pins are for the model 44 semi-auto carbine and are 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 inner & outer piston block plug retaining pin set:

No Prefix: 64382, 95121, 107880 & 114926

100 Prefix: 100-09871, 100-13353 & 100-36694

102 Prefix: 102-06552, 102-23818 102-51716 & 102-67115