NcStar Compact Red Laser Sight with Weaver Mount (ACPRLS), Black The ACPRLS Compact Red Laser Sight is here to get your Compact or Subcompact Pistol on Target Weaver Mount will easily Clamp onto Compact and Subcompact Pistols that have a Weaver Style Accessory Rail Fully Adjustable for Windage and Elevation On/Off Rear Cap Switch is Easily turned On or Off with your Trigger Finger Class IIIA Laser Product, &lt;5mW power output Weaver Mount will easily Clamp onto Compact and Subcompact Pistols that have a Weaver Style Accessory Rail. Fully Adjustable for Windage and Elevation. On/Off Rear Cap Switch is Easily turned On or Off with your Trigger Finger.