Thompsonbarrels

Thanks JJ109, got those with the jig, please see my other recent posts. Dave

survivalshop- I am referring to the pocket that must me formed that is .690" wide at the rear, it's location in reference to the rear pivot is what I am concerned about.or put another way, where the two step pocket that must be formed, is located " fore and aft". thank you! Dave

Hello Toolndie7, I am a CNC machinist toolmaker. I have a DPMS style 80% lower and jog, which I believe came from Daytona Tactical ( I bought them, both the jig and incomplete lower receiver at Knob Creek ). The jig plate has a bit of play, have measured it on the jig, and got dimensions, but they are different by nearly .050" from prints I find online, wanting to make sure I Mill it correctly! If can see your DPMS CAD file, I would greatly appreciate it. thank you! Dave

Hello shepp, JJ109, and sketch. Yes, this is my first post, because this is my first AR and as I said I am a CNC machinist who can his own work, I am looking for dimensions to confirm the jig. I am surprised at the differences I am finding in dimensions I am finding for the AR10 lower. I do indeed intend to measure twice and cut once, but hard to do that with discrepancies in dimensions, particularly the length between the rear pivot and beginning of the bolt cavity. The jig plate does have some play between the through holes in the plate and the tapped holes in the jig itself. thanks! Dave

Hello and thank for taking time to read this. I am a CNC Machinist with a small business producing TSMG barrels and antique firearm parts. Recently I acquired an 80% complete lower and jig down at Knob Creek, range and MG shoot. They appear to be a Daytona Tactical, definitely DPMS. I have the jig plates and instructions, my question though revolves around the location of the bolt cavity, I have yet to find two prints online that agree with each other. My jig checks at 3.892" from the center line of the rear pivot, an online drawing shows it at 3.840". rather than use the jigs, I would like to CNC Mill the pocket, so dimensions that are accurate are needed. Any information would be greatly appreciated! thank you, Dave