OBNXS1 Stuff 'n Things reviews the Feyachi Flip Up BUIS from Amazon, highlighting its lightweight yet durable aluminum construction with Mil-Spec hard anodization. The set is calibrated and designed for a low-profile rear sight on the same plane. It features a spring-loaded push button for quick deployment, windage-adjustable rear sight, and a micro-style windage knob offering the same MOA adjustment as a standard sight.

Strike Industries announce their new Sidewinder BUIS designed as backup sight for your scope and red dot sights... "The SI-Sidewinder is a backup iron sight that offers unprecedented flexibility. In one low profile package, the Sidewinder offers the on the go option for Left or Right 45 degree offset or traditional in line capabilities.