FYI, Glock RTF2(rough texture frame) has a different stippling pattern. The frames and crescent serrated, (((((, or "fish gill" slides that are on some of the RTF2 guns are both no longer in production.
Wal-Mart here in Duluth has had a variety of 12ga for several months. Slugs, buckshot, birdshot, you name it. I've seen 250 round bricks of 45acp Remington UMC at a reasonable $112 there also; harder to find though.