Which mount and rings fit your optic on your rail
A scope, red dot or magnifier only bolts to a rifle or airsoft replica through a mount, and mounts are not interchangeable. A ring has to match the scope tube to the millimetre, a red dot only drops onto a plate cut for its own footprint, and a Picatinny accessory does not always seat on a Weaver or an 11 mm dovetail. Pick your rail, your tube diameter or your red-dot footprint and get the published dimensions, the ring height that clears your objective, and the exact mount, rings or adapter plate to buy.
Rail and base standards
Picatinny rail (MIL-STD-1913)5.23 mm slot, 10.01 mm pitchWeaver rail4.57 mm slot, non-uniform spacing11 mm dovetail (airgun and rimfire)clamped groove, 60 degree3/8 inch (9.5 mm) dovetailUS rimfire tip-offAirsoft 20 mm RIS / RIS II railPicatinny-pattern, watch clonesScope ring height and objective clearancelow, medium, highAR-15 red dot and LPVO mount heightcowitness and 1.93One-piece cantilever mount versus two-piece ringsAR mounts, return to zero
Tube diameters
1 inch (25.4 mm) scope tube25.4 mm rings30 mm scope tube30 mm rings34 mm scope tube34 mm rings35 mm scope tube35 mm rings
Red-dot footprints
Aimpoint Micro footprintT-1 / T-2 / H-1 / H-2Aimpoint ACRO footprintACRO / Steiner MPSTrijicon RMR footprintRMR / SROShield RMSc footprintRMSc / Holosun KDocter / Noblex footprintDocter / Vortex / BurrisLeupold DeltaPoint Pro footprintDPP / Romeo1 Pro
Resolved fitments
- 1 inch (25.4 mm) scopefitsPicatinny rail (MIL-STD-1913)30 mm scopefitsPicatinny rail (MIL-STD-1913)34 mm scopefitsPicatinny rail (MIL-STD-1913)Aimpoint Micro red dotfitsPicatinny rail (MIL-STD-1913)Trijicon RMR or RMR-pattern dotfitsPicatinny rail (MIL-STD-1913)scope or ring on a Weaver mountfitsPicatinny rail (MIL-STD-1913)scope or ring on a Picatinny mountno fitWeaver railPicatinny scope or red dotadapter11 mm or 3/8 inch dovetailTrijicon RMR red dotno fitShield RMSc slide cutVortex Venom or Docter-pattern dotadapterTrijicon RMR slide cutAimpoint ACRO red dotno fitTrijicon RMR slide cutAimpoint Micro pattern red dotfitsAirsoft 20 mm RIS / RIS II rail30 mm scopeadapter11 mm dovetail1 inch (25.4 mm) scopeadapter11 mm dovetail1 inch (25.4 mm) scopefitsWeaver rail30 mm scopefitsWeaver railShield RMSc or Holosun K micro dotfitsPicatinny rail (MIL-STD-1913)Aimpoint ACRO or Steiner MPSfitsPicatinny rail (MIL-STD-1913)Holosun 509T enclosed dotadapterTrijicon RMR slide cutDeltaPoint Pro pattern dotfitsPicatinny rail (MIL-STD-1913)34 mm scopeno fit30 mm rings30 mm scopeadapter34 mm rings