HOLSTERS WILL FIT: Glock | 4.50" BBL | With Light | 20 & 21SF Gen3-4 with Dual Magazine Release with ITI M3, M6, Inforce APL, Olight PL-Pro or Valkyrie, Nightstick TWM-350, TWM- 350S, TWM-850, TWM-850S, TLR-1, TLR-1HL, TLR-2, or Insight XTI Procyon