I just got my Mark III Competition Target Slabside with a
6 7/8" barrel and cannot say enough good things about it. I have fed it CCI Mini Mags 40 Gr RN and Rem Golden Bullet 40 Gr Rn so far with no significant hiccups. The trigger is very light compared to my Glocks, even the G24 with the Vanek Master Classic. I have put an Ultradot Matchdot II on it because my old eyes are not as keen as they used to be. The rig is amazing. Congrats on your new purchase. Break down and reassembly was tricky the first time but by the second time it was a snap. It's never going to be as easy as taking down a Glock.
All the best,