Bob: It is kinda like this... 2 different times in the past years I thought I would get real thrifty & I would shop around & buy every part at the cheapest place & etc. After doing this for all of the parts for entire rifles, by the time I bought the parts, sent back the one that were not right or quality was poor & etc. and replaced those parts, I ended up spending well over $100. more than if I had bought a complete parts set from Tip or TOW or MBS.
For me the lock is the same way. I would buy 2 of everything to build it, on to practice on & one to hopefully do right. I don't doublt you can build one. I know I can build one. But to fool with the dang thing while a rifle is sitting there waiting for months while I scrutinize & adjust & redo parts & re-heat treat, etc....... for $50 . it is not worth it for me. Now that is to me,,,,,,,, Some want to know they did it themselves or like building them and that is fine... but I will spend the $50. and buy the lock.
If I ws you I would buy the lock for a few guns. You may pick up a lock cheap & tinker with it or buy a kit & tinker with it til ya get it right, but don't let that hold up the rifle work. Do it on the side til ya get it right. That way you will progress with the rifle & go on & when the lock is ready, then use it on something at that time. :imo: :results: