Re: Spart Parts s rail
To tighten the rail onto your marker on the underside there should be 2 medium sized holes. Take the screws out of the trigger frame on your gun and fit the rail onto your gun. Screw the rail to the gun
On one of the sides of your rail there should be 2 holes with hex head screws in them. Slide your unimount onto the rail and tighten the screws.