This Winchester manufactured second variation 7 5/8" long butt stock bolt has threads that measure 7" from end to end (non-threaded pointed tips not included) and is for the model 290 semi-auto rimfire rifle with a serial number above 350,000 and could be found in a weapon with a letter prefix. This part is in very good condition with light wear. (file photo)

Note: Winchester model 290 rimfire rifles with the following year/serial numbers have been observed with this part: B843561