I picked up a SKS a couple weeks ago for a great price. It was missing a cleaning rod (which I happen to have lying around here somewhere) and a bayonet. On closer inspection though, I found that it is missing the little doohickey (technical term) that is usually part of the barrel, which the spring-loaded bayonet sleeve snaps into to hold it in the stowed or deployed position. I can see marks on the barrel where someone has pried the part off, perhaps to make it legal on the Left Coast. The item looks like a semi-circle held under the barrel with a notch fore and aft for the bayonet sleeve to snap into. Can anyone lead me to where I can buy one? If not, can someone who owns a complete SKS make a few measurements and send me a dimensioned sketch? I'm sure I can fabricate one, given a few measurements. Thanks!