I went to the range today, took my G-17 and some ammo. but I had wanted to try out the G-21 as well. luckily, they had one available for rental, and too, lucky for me, they had ammo, but for the time being, they are limiting the ammo to only 50 rds per rental. So, I had Lawman .45, I cannot recall the gr. That 21 shot real good, actually to me, great. i was thinking about getting one, asked the range guy for pricing, and availability. price is good, but not available yet, as they (Glock i was told) was producing more 9 MM's right now.? but this is ok with me, my local gun store had a line around the building today, so in all actuality, i ain't in no hurry, and in the meantime, i can maybe put on order from the Glock Store, the slide take down extended lever, the slide lock extended release lever, and maybe the double diamond trigger connector. all that i have replaced on my 17. I just wished I could have had more ammo. i might buy some at another store, if I can find it, the range usually does not allow outside ammo for thier rentals, but these days due to all the crap going on, they will, as long as it is not re-loaded stuff.