Is he trying to say that the people here aren't reliable for helping me with my homework? I have to disagree. I think you guys are very knowledgeable and I really appreciate your support. I know I'm green. My gunsmith checked my rifle out before I shot it.
This is the half that I'm planning on making. I purchased the lower half for a reasonable price. The drawing shows 12.608 long, but I don't think that is exactly correct. I figured it out by counting the slots in the rail that are made to mil spec standards. The slots closest to the front aren't correct. I figured I'd shorten this one after a test fit. I would think it will end up in the 12.5 to 12.56 range based on appearances alone.
I don't know what they cost, but the ones used on the Armalite national match rifles are about as close as I've seen. I forget all the mod numbers, but the Armalite is not like the first M110 version. I'll check the length when I get a chance.
I'm working on an M110 build as well. I have the length written down, but it's not near me at the moment. Off the top of my head, I would have guessed 12.5, but 12 could very well be correct as well. Those numbers are definitely in the ballpark.
I'm going to sell this or the rifle I posted previously, not both. I'm in Wisconsin near Green Bay. I have this brand new Matrix receiver with a Geissele SSA trigger installed. I did adjust the screw in the lower receiver that puts a little spring pressure against the upper. I tried to picture some minor scractes from the screw driver. The rest is excellent. Brand new. I need to get $350 plus shipping to your ffl.
I need to sell this rifle to fund other projects. This is an older pic. I will update it when I get a chance or send me a message and I'll get you some pics. It's a complete rifle with charging handle and flash suppressor (not shown). The rifle is in excellent shape with less than 300 rounds through the barrel. Here's the parts breakdown. Aero Precision receiver set Rainier select barrel Armalite adjustable 2 stage trigger nicely tuned with minimal creep and in the neighborhood of 5lb pull on the tightest setting. DPMS BCG Troy hand guard includes 2 small rails not shown. A2 stock some minor skuffs Aero Precision takedown pins and bolt catch PSA lpk FSI Sniper scope (blue and green illumination only) I'm asking $1350 complete or $1250 without the scope.