The Raptor is truly revolutionary in design and function. From rapid palm "blading" or finger thumb charges of the weapon, the motion is fluid and fast from either strong or support side. Made in the USA from aircraft grae 7075 aluminum and Mil-Spec anodized. Examples of popular models which AR10/SR25 is compatible: Aero M5, STAG-10, Armalite AR10, Knights Armanent SR25, Daniel Defense DD5, V3, V4, V5, DPMS Gen1, and many others using DPMS Gen1 or Armalite AR10 platform. AR10/SR25 - NOT COMPATIBLE with SIG716, Savage MSR10, Smith and Wesson M&P10 these models use proprietary charging handle designs.