My Oslo, the talon grips add a bit more traction so to speak. They are offered in a granulte or rubber texture. I like the rubber as it is not as abrasive against the skin. They really work well if your hands become wet or slick.
You guys that carry..if your tired of payn $25 for 20 rounds...sg ammo website carrys your favorite flavor in 50....i personally carry ranger t's...great grandson of da black talon...for us short barreled freaks they do expand quite well at lower mv...just sayn. Lol
It may, we mainly shine up and tumble the magazine's, after they get heat treated. Mostly removing the heat treating scale and polishing.
Sig manufacture those in house? Smith & Wesson magazines are made by Mec-Gar, and a couple other companies over the years.
I help an MP shield in .40 this week. Nice gun. May be on my short list of wants in future. Felt like a boat anchor compared to my TCP 380 though.