Ultimate Arms Gear AmeriGlo SW-146 Classic M&P Shield 3 Dot Night Sight Set Green,Yellow Universal Trigger Lock Package Includes: AmeriGlo SW-146 + Ultimate Arms Gear Secure Steel & Zinc Bodied Universal Firearm Gun Handgun Pistol Protective Key Lock Trigger Block Locks Ultimate Arms Gear secure trigger lock is designed to fit most Triggers. For superior durability and security it is constructed of hardened steel and zinc while it is fitted with innovative rubber pads to shield the firearm from scratching or marring whatsoever. Lock is designed to easily and safely lock in and unlock out of place in a matter of a few seconds and includes 2 sets of standard keys.