Sight Riser for 11mm width rail suitable for Air Arms MPR, TS400 and other rifles with 11mm rails. Printed to required Height and colour, select from dropdowns before adding to cart. The Rear Mount is 65mm Long and has 2 x Securing Points. The foresight is 10mm long and has 1 x securing point. The risers slide onto the 11mm rail and are secured by tightening the 2mm allen screws. When ordering please specify the sizes required. The minimum Height is 11mm due to the requirement of the fixings. These will fit Air Arms MPR and other Similar Rifles. Note: Rules state Centre of Dioptre to Centre of Barrel max 60mm. Air arms MPR max height is 53mm sight riser.