These red dot sights clamp to a Weaver/Picatinny rail — no footprint to match, because the rail itself is the standard. That makes them the straightforward choice for rifles, shotguns, PCCs and pistols with a railed mount: seat the clamp, tighten the crossbolt, done.
Before ordering, check available rail space and the sight height you need for a co-witness with your iron sights. Reticle, window size and dimensions are under Key specifications on each product page.