well, the little dear is all put together, the dummy rounds have been run through it to test functioning, .... , and, i've no place to go shoot it. and, no "cameraman" available.
here is what she looks like attached to a proper upper. (when i've got an upper fitted, it will be held on w/ cap screws through tensioning pins, but, for right now, hardened steel pins w/ a friction fit will have to do.)
caption: no safety in place, just yet, i haven't figured out how to make one that will operate quickly. for right now, a 3/8" cap screw inserted through the action will have to do. it makes a pretty good safety .... i don't think the tail of the trigger assembly is going to budge it very much. for the safety to allow the trigger assembly to move, the through bolt requires a substantial relief cut: it can function by being rotated, or by "push pull" like the remington shotgun safeties. we'll see.
and, since this is "show & tell," i'll give you the other side of the lower receiver and the upper put together. if you want to look to see the "gaps" in the fit, just put the cursor on the picture and click, and you can get a larger view.
caption: i will finish the "finish" by coating the pvs w/ some blue pipe dope, "gluing" the "t" to the pvc pipe, and then painting it w/ my trusty krylon. the stuff has proved quite a bit tougher than i thought, suffering repeated "taps" from a hammer, and other indignities. i figure i will just stick with the basic green treatment its received thus far ... it matches the magpul furniture pretty well.
well, that's it.
to the range, and shoot the danged thing a little bit, and see how it works. i am pretty sure that it will be an entirely "non-event" event, as the upper and lowers fit very well together, and the dummy rounds go in and out of the thing as expected. and, an empty case w/ a primer indicates that the hammer and the firing pin are in a proper relation, and the bolt carrier group goes into battery as designed.
it's all really pretty straight forward, and i don't see where much can go wrong. i will let you know. just be patient. you have, after all, waited this long.
john jay @ 08.18.2015
p.s. the next project? well, i want to build an upper receiver from seamless tubing. it should prove a piece of cake.