In Season 6, Natalia Boa Vista (Eva LaRue) makes the transition to a full CSI and thus starts to carry a Glock 26. In the early episodes of the season she is seen training with it and other weapons.
Det. Frank Tripp (Rex Linn) carries a SIG-Sauer P226 throughout season 6. In "Tunnel Vision" (S06E18), Wolf finds a P226 that Charles Brighton (John Schneider) used to kill his accomplice then tried to bury in concrete.
Lt. Horatio Caine (David Caruso) continues to use his SIG-Sauer P229 during season 6.In "Inside Out" (S06E03), Natalia Boa Vista (Eva LaRue) is seen using a SIG-Sauer P229 to train at the firing range.
The renewal means CSI will reach its milestone 300th episode early next season. There is still no word on the fate of spin-off CSI: NY, though it seems possible the original could outlast both of its spin-offs. 2b1af7f3a8