The 7oz stock weight will bring the gun back to factory center point of balance when used with the #390 or #391 counterweights. The 5oz stock weight is for the shooter who needs to add some weight to his stock. Also available in 10oz and 12oz. Easy to install, just unscrew the stock nut and screw on the stock weight. Polished and blued steel. Fits Beretta 390, 391 and A400.
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