I could see myself getting a G40 with my next GSSF pistol win, but I'd probably end up going with a G20.
Unfortunately, GSSF discriminates against the long slides and shunts them all off into the Competition and Unlimited divisions, which have no power factor boost.
For 10mm, one might want to compete in heavy metal:
HEAVY METAL 170.111 This Division is for all competitors, both Amateur and Master, who wish to compete with their stock GLOCK Models G20, 21, 29, 30, 37, 38, and 39 GLOCK firearms. Adult (>18) competitors may use stock non-compensated models of these GLOCK firearms. Junior (
Same happens for my G34 that is pushed out of Am Civ and Master Stock into Competition or Unlimited. I end up having to just use my G17 in all these matches.