Mec Gar is the OEM manufacturer for many pistol manufacturers, including S&W in the past. Their 59xx mags are great. They also fit your 915.
The only way I would use Pro Mags were if they were for single stack pistols, and only as back-up range magazines, and they were free.
Last edited by Racer X; 09-11-2017 at 12:27 AM.
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