Several years ago, a friend (now deceased) was looking for some GI ammunition for his M1icon and found a deal involving 800 rounds of LC together with a Smith Corona A3. My friend didn't want the A3 but the seller wouldn't break up the set so my friend bought it anyway. It was a very nice A3 and shot very well. Like most of those rifles it had been through rebuilds and had parts replaced. My friend read an article published in the American Rifleman about the A3's and discovered that his had a Remington bolt and trigger guard assembly. So, like many on this forum, he wanted his rifle "right". He came to me for help. The guard was no problem; I found one right away, but the only SC bolt I could find was in a box of 4. I asked if he wanted to buy 4 and he said to go ahead. I took one out of the (sealed!) box, cleaned the grease off it, put it in his rifle, and checked the headspace OK. He was happy. My friend is long gone (2010) as is the rifle. I think the Remington guard went to some one on this forum. But I've still got the box with 3 bolts in the original wrapping. I should probably move them along since I can't imagine I'll ever have a use for them. I believe I've got a Bonny Forge and a Brown & Sharpe bolt around here someplace, too.