.40 S&W cal., compact variation of G22, checkered grenade grip frame, 4.01 in. barrel with hexagonal rifling, 10 and 13 shot mag., black finish. Mfg. 1990-1997.

During 1996, AcuSport Corp. commissioned Glock to make a special production run of matching .40 S&W caliber sets.  Each set consists of a Model 23 and 27 with serialization as follows: (Ser. prefix AAC0000-AAC1499) and model 27 (ser. prefix AAD0000-AAD1499).