STI/SV Grams Superior Base PAds For STI And SVI 4 sizes that give you the option to increase magazine length by 2.5, 4.0, 7.7, or 11 mm. Increase your capacity by 1, 2, or 3 rounds varying on caliber Basepads consists of basepad and U-pin.
NoticeDue to variations in manufacturing tolerances in base firearms some replacement / custom / drop in parts may require fittingWe ALWAYS suggest the use of a competent gunsmith