I bought a Mossberg MC2sc, which came with 1 @ 11 round magazine, and 1 @ 14 round magazine. The 11 round mag was flush fit, which only allowed 2 fingers on the grip. I did a search and found a guy on eBay selling polymer pinky extension baseplates made to fit the 10 and 11 round Mossberg magazines. The extra mags I bought at Gun Mag Warehouse. Holsters are few and far between for this gun. I did find a good IWB kydex holster with a built in claw and optic cutout from Whole Guns. They also sell them on Amazon. Another good holster was from Cleveland Kydex. They have 3 styles under their quick ship holsters; a full guard (slide protector both sides) a high guard (slide protector inside only) and a holster with any slide protector, and if you're going to put an optic on it, you also have to tell them that. I then purchased the Mcarbo trigger spring kit, with 3 springs, which really helped with the trigger pull, making it smoother. Optics...I'm waiting for Crimson Trace to get the CTS 1550 red dot back in stock. I signed up for "Expert Voice", where the Crimson Trace optic is 30% off with free shipping. Thought I'd share this info.