Now offering Milspin Magazine Extensions to our line of aftermarket Glock upgrades! These premium parts add an ergonomic extension for your grip, increased round capacity, and added weight to your magazine for rapid ejection.  Months of engineering, precision machining, and trial and error have resulted in this perfectly designed custom built magazine extension to fit your Glock. Extension Material: Aircraft Grade aluminum with Cerakote Extension Weight: 1.2oz Each component of this product, including the custom spring and retainer pin, is machined right here in the USA.  ***Custom Spring (included with plus 2 versions): 0.051" Rocket Wire to ASTM A228, adding additional coils to account for the extra rounds in your magazine*** ******Plus 2 Magazine Extensions are not for sale to California residents, unless you are a Law Enforcement Officer. This is due to your tyrannical government's laws. An order with a California shipping address will be sent an email requesting LEO credentials or a full refund will be issued.****** ***Additional magazine extensions of varying capacities and models to accommodate every Glock model ever produced will be released regularly throughout the remainder of this year. If you do not see your model available yet, sign up for our email list to be notified as soon as we release them.***