Of the mag pouches I've tried over the years, only Safariland and this SpeedMag are the only ones I'll recommend. The SpeedMag is easy to adjust and is ready for competition. Also works for Caspian magazines. I use 4 with my setup. Fits belts 1.5" (38mm).

• Right-hand shooters: Order Right-hand Pouch
  (Right-hand pouch is worn on Left Side of body)
• Left-hand shooters: Order Left-hand Pouch
  (Left-hand pouch is worn on Right Side of body)
• Fully adjustable for rake and tensionNow availabe for both large and small frame models / magazines.
  

Large Frame mags measure 1.345" x 0.850" (34mm x 21.5mm) fits:
US Market: All EAA Witness models sold since mid 1990's.
Outside US: Tanfoglio 38 Super, 40S&W, 10mm and 45 ACP.
Also Fits: Caspian Hi-Cap Mags !

Small Frame mags measure 1.250" x 0.800" (32mm x 20.5mm) fits:
US Market: Springfield P9's, EAA Witness models sold prior to mid 1990's.
Outside US: All Tanfoglio 9mm models. Production Stock II !
Also Fits: A wide variety of doiuble stack 9mm magazines such as Beretta, Browning 9mm, Heckler &  Koch, Ruger, Sig Sauer, Smith & Wesson, Springfield, Taurus.

A great magazine carrier with a low profile for easy magazine indexing and faster reloads. Features two adjustable retention screws for precise adjustment. The clip allows for a easy on and off feature. This new clip will also work with a belt or without a belt with most pants. Fits belt size 1.5". Available for Right Handed shooters only at this time.