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The components most likely to need an adapter

57%
Trijicon RMR footprint needs an adapter or does not fit in 57% of the combinations we checked, the highest share in the dataset.

Which component most often needs an adapter?

Trijicon RMR footprint tops the list: 4 of its 7 checked combinations (57%) need an adapter or do not fit. The full ranking is below.

#ComponentsAdapterNo fitAdapter-or-no rate
1Trijicon RMR footprint2257%
230 mm scope tube2160%
311 mm dovetail (airgun and rimfire)30100%
4Picatinny rail (MIL-STD-1913)1122%
534 mm scope tube1167%
6Weaver rail0125%
71 inch (25.4 mm) scope tube1033%
8Aimpoint Micro footprint1033%
9Shield RMSc footprint0133%
10Docter / Noblex footprint1050%
11Aimpoint ACRO footprint0150%
123/8 inch (9.5 mm) dovetail10100%

How this is worked out

For every component we counted the combinations that resolve to an adapter fit or a no-fit across the reference set, and ranked by that count. The rate is those combinations divided by all combinations checked for that item.

Data as of 2026-09-05.

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