Hi Dennis, They're the similar size and weight. The Security 9 has "front and rear serrations and the SR9e just rear. The SR9e is "strikered fired compared to the "hammer fired" Security 9. Feel, weight and ergonomics are similar so this would boil down to action preference between the two.

basically the security is a hammer fired version of the SR9E striker fired gun Internal, Secure Action hammer provides strong ignition force yet allows for easier slide racking when compared with many striker-fired pistols. Front cocking serrations enable positive slide manipulation.

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basically the security is a hammer fired version of the SR9E striker fired gun Internal, Secure Action hammer provides strong ignition force yet allows for easier slide racking when compared with many striker-fired pistols. Front cocking serrations enable positive slide manipulation.

Similar size and weight Dennis. The Security 9 has "front and rear serrations and the SR9e just rear. The SR9e is "strikered fired compared to the "hammer fired" Security 9. Feel, weight and ergonomics are similar so this would boil down to action preference between the two.