Tech Sight's SU16A1 Adjustable Aperture Sight forfor the Keltec® SU16 series, SU22, PLR16 & PLR22 rifles and pistols
Mounts the sight closer to the shooter's eye, giving the shooter a sight picture similar to the M1 Garand and M16 military rifles.  Comes standard with dual apertures (.062) and is compatible with varios standard aftermarket M16/AR15 apertures. Uses incremental windage adjustment with rugged detent locking. Elevation is adjusted using stock KELTEC AR15 style front sight. Parts use steel components finished to Military Specification. Also available on Amazon is a rear elevation aperture version of this sight. SU16A1-EL  ASIN: B00I7H8YVA. Fits KELTEC  SU16- A, B, C, D, CA, and SU22 rifles, and also the KELTEC  PLR16 & PLR22 pistols.