Hygienist

Thanks for the input. So far it seems it's possible :) My last question is in the barrel assembly. If I were to tell a barrel guy to make an AR15 barrel and an AR10 barrel both with .750" OD contour, would they weigh the exact same, or would the AR10 weigh more due to heavier barrel extensions or whatever? I'm trying to get a general idea but it's a bit difficult. Looking at Rainier Arms Select barrels in 5.56 and .308, the .308 is 6oz heavier, and from the pictures, looks to be the same-ish contour and appears to have no reason to weigh 6oz more. In addition, Rainier makes a lightweight .308 that looks more anorexic than a supermodel, but weighs 34oz, which is 3oz MORE than the much meatier looking 5.56. The two Rainier Selects in question http://www.rainierarms.com/?page=shop/detail&product_id=2267 5.56 (31oz) http://www.rainierarms.com/?page=shop/detail&product_id=2687 .308 (37oz) And the skinny ass lightweight .308 http://www.rainierarms.com/?page=shop/detail&product_id=2421 Any reasons for the weight disparities? Main question: For a barrel of the same contour (.750" is the contour of interest, and 16" length), how much more will an AR10 barrel be vs an AR15?

Thanks for the replies. Expense is not a concern, but I'd rather not build this at all if it doesn't make weight. I'm trying to use the online AR weight calc http://vuurwapenblog.com/calc.html?Lower=17.4&Tube=3.7&Buffer=2.9&Upper=9.2&Barrel=32&GB=1.6&BCG=11.5&CH=1.5&Stock=11.5&Handguards=-2.8&Optic=0&Light=0&RearSight=0&FrontSight=0&MD=2.1&VFG=0&Can=0&Mag=0&Ammo=0&GL=0&Bipod=0&Misc=13&output=6.012499999999999 to try to see how much it weighs. I built it as I would an AR10 and then added extra weight according to specifications. Are the receivers and the BCG the only extra sources of weight? Mega MATEN lower/upper: 11.8oz more than a AR15 upper/lower AR10 BCG: 7.5oz more than an AR15 BCG Adding the 19.3 extra oz puts it right at 8.03ish lbs. Would there be more sources of weight? I'm guessing there will be.

I'm considering an AR10 build, based off the Mega MATEN .308. My desired goal weight is right at 8.0lbs, without a mag inserted. Would it be possible, with the following? 16" Medium contour barrel (2lb 5oz) (Rainier Select 16" 308, to be specific) 13.8" Modular Rail (13oz) Standard 5.6oz buffer B5 SOPMOD stock (let's say 0.75lb) Could this make weight? Or will it be going over?