I have a .223/5.56 to 22lr conversion kit. I have been told it was a military issue M261 kit based on pictures of the magazines. I have found the conversion bolt and would like confirmation/input. The only identifying marks are 2 numbers on the bolt. I have a some pictures attached including a closeup of the numbers. The top number looks like 012432 and the bottom one is either 009818 or C09818. Interested in maybe selling it along with 6 magazines for it. Thanks for all your help.
Scott