Ok just started on this build. Parts Ordering stage right now. I put place holders in the first five replies so I can get the info up front, before we start talking about the build. This one is top priority, over my 458 Socom build and others for the moment. Time constraints more than money... My youngest son, the future Air Force JAG officer, was asking me about the AR10's the other day. Long story short he wants one, for a while at least, to do a paper for his ROTC class on the differences between it and the AR15/M16. Mainly why the AR15 was chosen and the AR10 wasn't, and why the AR10 could make a comeback in the DMR role. I've got two already, a 24" 308 and a 26" 7mm08, neither fits what he wants the rifle for. And it wouldn't be a fair comparison to use them for the test. Mine are both long range, specialty rifles. He's wanting one that the military would, theoretically, issue as a DMR weapon. So I started building a new one. Along the lines of the DMR rifles I and other were issued in "Sand Box" 1 and 2. I'm not trying to copy Gene Stoners original, I know there has never been a formally accepted AR10. What I'm building is a possible config that could be a mil spec DMR rifle built with current tech. So a little leeway is permissible. The rifle will end up back in my collection in the end, unless my son decides he wants to keep it. To make the build a little more stressful it needs to be done by the end of the month so he can do some testing and have time to write his paper. That means mostly built off the shelf instead of my normal custom machine everything approach. This will end up being the type of build that most other people can do at home, so I though it would be worth making a build thread as I worked. I'm at the parts stage right now. I've got a firm picture in my head already. I just don't have much time when I get home to actually do the work. I'll break down and show links and pictures of the pieces I'm using, and how much I spent. Some parts I've already got. The upper and lower are sitting in my safe at home already machined. So you'll get links to the 80% parts I started with. I've got a selection of triggers already sitting at home. I'll probably put a 2 stage, national match trigger in the rifle. Maybe it will end up with the POF single stage that I've got left over from the 458 build... PARTS: https://onlylongrange.com/80-308-lower-receiver/ https://onlylongrange.com/gun-tec-308-billet-upper-receiver/ http://www.spintaprecision.com/308-angle-cut-bolt-carrier-group-nitride-w-serration-sale/ https://onlylongrange.com/308-upper-dust-cover-forward-assist-charging-handle-kit/ https://www.ebay.com/itm/18-308-Barrel-Made-in-USA-1-10-Mid-Length-308-Rifle-7-62x51-MATCH-GRADE/182122756255?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 18" 308 Barrel Made in USA 1:10 Mid Length .308 Rifle 7.62x51 MATCH GRADE, $131.71 + free shipping. https://www.ebay.com/itm/Blem-5-8x24-Shark-Muzzle-Brake-Crush-Washer/253459151188?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 Blem - 5/8x24 Shark Muzzle Brake + Crush Washer, $9.95 shipped free https://www.ebay.com/itm/15-ULTRA-SLIM-Keymod-Handguard-Free-Float-Low-profile-308-308-US-SELLER/272906647460?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 15" ULTRA SLIM Keymod Handguard Free Float Low profile 308 .308 US SELLER, $44.95 shipped free. https://www.ebay.com/itm/KM-Tactical-308-Lower-Parts-Kit-LPK-NO-FCG-OR-GRIP-MSR/162837477203?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 KM Tactical 308 Lower Parts Kit LPK NO FCG OR GRIP MSR, $40.00+ $2 shipped. https://www.ebay.com/itm/302663982108?ViewItem=&item=302663982108 Anti Walk Pins 2 Steel Side Plates 154 All Steel Anti Walk Hammer Trigger Pins, $8.35+ shipped free. https://www.ebay.com/itm/Ambidextrous-Safety-Selector-Fits-223-300/332563020559?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2648 Ambidextrous Safety Selector Fits 223/300, $10.99 shipped free. https://www.ebay.com/itm/Doublestar-ARFX-E-Stock-with-Tube-with-Black-Foam-and-5in-RP-Black-A110B/352187848389?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 Doublestar ARFX-E Stock with Tube with Black Foam and .5in RP, Black, A110B, $90.99+$21.23 shipped. https://www.ebay.com/itm/308-Regular-Mil-and-Commercial-Mil-Spring-3-7-OZ-Weight-308/311974015568?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 308 Regular Mil and Commercial/Mil Spring + 3.7 OZ Weight .308, $13.93, shipped free. https://www.ebay.com/itm/Black-Pistol-Grip-Ergonomic-Tactical-Rifle-Pistol-Grip-Stippled-Storage-Comp/252675362446?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649 Black Pistol Grip Ergonomic Tactical Rifle Pistol Grip Stippled Storage Comp,$12.99 shipped free.