GLOCK 21 GEN 4 (RTF-4) Description
.45 ACP cal., striker fired, DA, 4.61 in. octagonal barrel, 10 or 13 shot mag., 5 1/2 lb. trigger pull, 3 safeties, dual recoil spring assembly, features (less polymid traction) Rough Textured Frame (RTF-4) with recessed thumb rests, finger grooves, accessories rail, interchangeable frame backstraps, includes a reversible enlarged magazine catch, dual recoil spring assembly, and a new trigger system, fixed rear, adj. rear, Glock steel, or Glock night sights, standard black, optional FDE (limited mfg. 2012-current) or Gray (limited mfg. 2015-current) finish, 8.23 in. OAL, 29.28 oz. New 2011.