Nice find.
I've seen and used both types back when we issued 5903's and we started ordering some 15rd mags. (Our early production 5903's originally came with the early 14rd mags.) As I recall, I saw the orange ones with the more rounded top appear in some of the newer mags first, and then the more "standard" looking ones (looking like the black followers) appeared afterward.
The legs of the orange followers were just enough shorter than the black followers so they would allow the loading of a 15th round in the standard magazines. The witness holes were also changed in the mags produced for use with the orange followers to incorporate a hole for the 15th round.
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Ret LE Firearms inst & armorer
Last edited by Fastbolt; 12-19-2018 at 01:56 AM.
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