This kit includes a new +20% extra power spring and a hardened steel locking plate. These are the only extensions for the XD45 that have locking a plate to keep the extension from popping off your magazine as it hits the ground. The spring is very high quality and are custom made to fit exactly like factory, yet give you the extra force required for proper feeding.
With the help of a UpLULA Magazine Loader:
45ACP 13RND Magazine (16+1)
10MM 15RND Magazine (19+1)
When using this extension with 10MM ammunition, we suggest that you use your factory magazine springs, which may result in better feeding.
Glass Filled Nylon Magazine Extension
Hardened Steel Locking Plate
+20% Extra Power Spring
NOT FOR USE WITH XD-S (SLIM) MAGAZINES
Note 1: When installed, your magazine will be longer than 140mm, therefore these are not legal for USPSA Limited and L10
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to - www.P65Warnings.ca.gov