I need a bolt for a 391 receiver i bought that had been stripped. I now have the trigger and all other parts just need a bolt. It will be used for waterfowl hunting so i have til this fall to find one. This thread mey be on here a while.lol
A 303 bolt is not the same as a 390 and 391 to my knowledge. In fact the block that fits into the bottom of the bolt is even different. The parts that go into the bolts like firing pin springs and ejectors are the same but the bolts themselves are different.