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Fits most 1911 style pistols in 9mm, 38 super and 40S&W. Note: STI and some other 45 ACP slides use small diameter firing pins. Measure firing pin to be sure.
Small Diameter 1911 Firing Pins are .067"
Large Diameter 1911 Firing Pins are .090"
Article number: DP-2011-EXT-FP
Dimensions: 10 x 7 x 2
Weight: 226