The 6378RDS holster is specifically designed for firearms with red dot sights. The holster features the ALS which locks the firearm securely in place when holstered but still allows a natural draw with a swipe of the thumb release as you establish your grip. SafariLaminate construction makes the holster strong on the outside, while SafariSuede on the inside protects your firearms front sight and finish. Gun fit: Sig Sauer P320 RX 9 ITI M3 Sig Sauer P320 RX 9 Streamlight TLR-1 Sig Sauer P320 RX 9 Streamlight TLR-1HL Sig Sauer P320 RX 9 SureFire X200 Sig Sauer P320 RX 9 SureFire X300 Sig Sauer P320 RX 9 SureFire X300U Sig Sauer P320 RX 9 Leupold Deltapoint Sig Sauer P320 RX 9 Trijicon RMR Sig Sauer P320 RX 9 Dr. Optic Sig Sauer P320 RX 9 J Point Sig Sauer P320 RX 9 Vortex Viper Sig Sauer P320 RX 9 Burris FastFire Sig Sauer P320 RX 9 Inforce APL Sig Sauer P320 RX 9 Nightstick TWM-350 Sig Sauer P320 RX 9 Nightstick TWM-350S Sig Sauer P320 RX 9 Nightstick TWM-850 Sig Sauer P320 RX 9 Nightstick TWM-850S Sig Sauer P320 RX 40 ITI M3 Sig Sauer P320 RX 40 Streamlight TLR-1 Sig Sauer P320 RX 40 Streamlight TLR-1HL Sig Sauer P320 RX 40 SureFire X200 Sig Sauer P320 RX 40 SureFire X300 Sig Sauer P320 RX 40 SureFire X300U Sig Sauer P320 RX 40 Leupold Deltapoint Sig Sauer P320 RX 40 Trijicon RMR Sig Sauer P320 RX 40 Dr. Optic Sig Sauer P320 RX 40 J Point Sig Sauer P320 RX 40 Vortex Viper Sig Sauer P320 RX 40 Burris FastFire Sig Sauer P320 RX 40 Inforce APL Sig Sauer P320 RX 40 Nightstick TWM-350 Sig Sauer P320 RX 40 Nightstick TWM-350S Sig Sauer P320 RX 40 Nightstick TWM-850 Sig Sauer P320 RX 40 Nightstick TWM-850S