M&P Mag +3 Extension for the .45 Cal and 10mm Magazines *WILL NOT FIT SHIELD MODEL
10mm is +5 We do recommend using the Extra Coil Wolff springs when using the 10mm
Stock springs work for the .45
Made from 6061 Aluminum, hard anodized.
KNOW YOUR STATE AND LOCAL LAWS
bases and extensions WILL have problems
when dropped repeatedly on concrete. They are Hard Anodized, but they are still
aluminum parts that will take on damage. When installing the extensions, only
tighten the back plates down until secure. The plate may crack or break if
tightened down too much.
Please View the youtube video at: