Last time I was at the local outdoor range playing with my .308 S&W
AR10, a fellow in a wheelchair who was enjoying target shooting came
over for a look-see, and he shot off a few rounds. He liked it a lot,
especially with the bit of "customization" I had done (free-floated
handguard, low-profile gas block) and the fact that it had "ambi"
controls. He called last week and "made me an offer I couldn't refuse,"
so...it is now his.

So I am putting together another AR10, this time with an 18" barrel and
a Timney trigger group, among other niceties. The S&W had a 16" barrel.
I won't miss the ambi controls... I'm used to the mag release on the
right-hand side of the lower receiver and the safety and bolt release
on the other side.