First Strike FSR Adjustable Riser rail with included 3-9x32 scope. Extremely effective with first strike paintball rounds. Adjust elevation accordingly based on distance from target. The First Strike FSR Adjustable Riser mounts onto any 7/8" picatinny tactical rail. The FSR Riser raises your sight or scope 1 1/2 inches for improved mask and hopper clearance, as well as provide extra rail space for flashlights, lasers, etc. Precision machined from aluminum in matte black finish.