BubbaGump Posted May 21, 2021 Report Share Posted May 21, 2021 Howdy everyone, Working on my first ar10 build and just got my “complete upper” in, not realizing it didn’t come with a bcg. This is the one https://www.aeroprecisionusa.com/m5-16-308-cmv-complete-upper-atlas-s-one it’s my understanding that there are different types of BCGs for the ar10 platform and after a ton of research I can’t find any info on the one I need. So in hopes of stopping this headache I thought I’d ask some experts. And yes I did contact aero and they just told me I need one of their BCGs (great salesmanship right there). Any help is appreciated, thx Quote Link to comment Share on other sites More sharing options...
unforgiven Posted May 21, 2021 Report Share Posted May 21, 2021 Toolcraft works check out https://grabagun.com/ Quote Link to comment Share on other sites More sharing options...
dpete Posted May 21, 2021 Report Share Posted May 21, 2021 (edited) You have an Aero Precision 308 AR upper. Nothing you have is remotely AR10. It may seem nitpicky but clarity of definition is hugely important with these big cousins because every manufacturer can make parts any way they see fit and very few aftermarket sellers know the difference. AR 10 only refers to Armalite products. As unforgiven said, Toolcraft works or why not an Aero Precision BCG since your upper is Aero? Other than the fact that in stock items are hard to come by. Here ya go. 2 models in stock https://www.aeroprecisionusa.com/m5-ar308/spare-parts/bolt-carrier-groups https://www.brownells.com/rifle-parts/bolt-parts/bolt-carrier-groups/ar-308-bolt-carrier-group-phosphate-prod84516.aspx?avs|Cartridge_1=AAK_30%2bCaliber%2b(xzzx308) Edited May 21, 2021 by dpete Quote Link to comment Share on other sites More sharing options...
unforgiven Posted May 21, 2021 Report Share Posted May 21, 2021 That's a good price for the times. Get 2 Quote Link to comment Share on other sites More sharing options...
BubbaGump Posted May 21, 2021 Author Report Share Posted May 21, 2021 Thanks for the help guys. Wish everything was s as streamlined as ar15s. Apparently I have a bit to learn haha Quote Link to comment Share on other sites More sharing options...
Tack14 Posted May 21, 2021 Report Share Posted May 21, 2021 I can't (and won't) speak for Aero Precision stuff (I have not put my own hands on much of it) but there are Nitrided and Nickel Boron ones listed on AR Parts Finder as having come in stock at Aero Precision very recently: http://arpartsfinder.com/instock/index.cgi?type=bcg&quant=25&s=308&min=&max=&sortby=duration-asc Quote Link to comment Share on other sites More sharing options...
dpete Posted May 21, 2021 Report Share Posted May 21, 2021 48 minutes ago, Tack14 said: I can't (and won't) speak for Aero Precision stuff (I have not put my own hands on much of it) but there are Nitrided and Nickel Boron ones listed on AR Parts Finder as having come in stock at Aero Precision very recently: http://arpartsfinder.com/instock/index.cgi?type=bcg&quant=25&s=308&min=&max=&sortby=duration-asc Yup, the link I posted goes to the Aero site where both of them are. Quote Link to comment Share on other sites More sharing options...
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