I went ahead an ordered three extended mags for my new Echelon 5.28" Threaded Barrel. MagShack was out of the black and I didn't want to wait so I ordered the OD Green units. It'll look cool and hopefully make @Belt Fed happy.
Got the Sig P-220 Legion SAO 45acp back from The Sig Armorer. Trigger is great about 3/16" take-up, very crisp 2.7lb break, no measurable over travel & around 1/8" re-set. Very, very pleased but 400 bucks for the work is kinda steep. Health and weather permitting plan a range trip next week.