Hey just picked up an Armalite AR10. Now this isn't the off the shelf rifle it has what seems to be a 20" NM barrel in crome molly "no flash hider and not threaded .740 at muzzle". It came with the Armalite quad rail and 3 rail covers, an MI low profile Gas Block, 2 stage Tactical trigger, and a set of Leupolds ultra High Mk4 30mm rings...All for $1350 bucks...NEW. I am retarded happy, like little kid happy. Anyways I bought some ammo at the shop and brought along some Handloads that I had made up for my Remy 5R milspec to shoot for fun-ction. To make this short It Ate Them Up. I ran Fed. 150gr soft points to my 168-175gr hand loads to a few rounds of American Eagle M1A 168gr Match. This thing is Awesome "yes its my first AR10" and I got a great deal I think. Now I got home grabbed the M-pro7 copper cleaner and went to work, there was a Lot of copper in the bore more at the muzzle after the gas block. Anyways I am going to shoot today and break it in any tricks I might need to know as for the break in. The M-pro7 copper cleaner is Awesome and I bought some of the M-pro7 LPX gun oil and lubed up the insides as it was bone dry. Has anyone used the LPX gun oil? This is long sorry. Thank for replies.