To meet the shooters' increasing demand for high quality sights LPA has developed the spr series. The SPR sight sets are machined from solid steel using state-of-the-art CNC milling. Improve your firearm with a spr sight set! Features: a Streamlined design and compact low profile. a Micrometric adjustment for windage and elevation provided by hardened click screws. a Tapered dovetail for a strong locking in the existing groove. a Allen wrench and adjustment screwdriver included in the package. Mfg: L.P.A. Sights