Safariland Model 7280 7TS SLS Mid Ride, Level II Retention Duty Holster for Glock 17 w Light Hand:Left It is not a bump cap The police are said It is not a bump cap insert or hard hat liner and provides no ballistic or impact protection Low Frequency siren sound can be activated via any emergency vehicle steering wheel horn ring The SLS allows for a smoother single motion draw and greater protection against attempted takeaways Gun fit: Glock 17 ITI M3 Glock 17 Streamlight TLR 1 Glock 17 Streamlight TLR 1HL Glock 17 SureFire X200 Glock 17 SureFire X300 Glock 17 SureFire X300U Glock 17 Inforce APL Glock 17 Nightstick TWM 350 Glock 17 Nightstick TWM 350S Glock 17 Nightstick TWM 850 Glock 17 Nightstick TWM 850S Glock 22 ITI M3 Glock 22 Streamlight TLR 1 Glock 22 Streamlight TLR 1HL Glock 22 SureFire X200 Glock 22 SureFire X300 Glock 22 SureFire X300U Glock 22 Inforce APL Glock 22 Nightstick TWM 350 Glock 22 Nightstick TWM 350S Glock 22 Nightstick TWM 850 Glock 22 Nightstick TWM 850S Level II Retention Holster SLS (Self Locking System) Rotating Hood A proprietary nylon blend that is completely non abrasive to a firearms finish Raised stand off surfaces in the interior of the holster to create air space around the weapon allowing dirt and moisture to quickly clear any contact with the firearm Very high heat and low cold tolerances structurally sound from 300 degrees F to 50 degrees F Can be submerged in water indefinitely and still maintain shape and function Matte finish designed to decrease reflection and can be maintained with a simple scouring pad