This Remington manufactured breech block is for the No. 6 falling block rimfire rifle in 32 rimfire caliber only and is in very good condition exhibiting a grayish brown patina with light wear. The firing pin hole will measure .350" below the top of the standing breech.  (file photo)

Note: Remington No. 6 falling block rimfire rifles with the following calibers and serial numbers have been observed with this part:

32 Rimfire: S192813, 407776 & 458641