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Data studies from 22 computed fitments
Original rankings computed from our own compatibility and specification dataset, covering 18 parts and 22 checked combinations. Every figure is a real count from that data, with the sample size shown and the method stated. The tables are free to cite and republish with a link.
Data as of 2026-09-05. Source: our own compatibility and specification dataset.
The most broadly compatible components7 · Picatinny rail (MIL-STD-1913) fits 7 of the combinations we checked directly, more than any other of the 15 components in the dataset.The components most likely to need an adapter57% · Trijicon RMR footprint needs an adapter or does not fit in 57% of the combinations we checked, the highest share in the dataset.