Tyrant CNC P365-XMACRO Magazine Extension Features The Tyrant CNC Magazine Extension is built specifically for the Sig Sauer P365 X-Macro 17 round magazine adding three additional rounds of 9mm capacity for a total of 20 plus 1. It is CNC machined from 6061 aerospace grade aluminum giving it the strength to handle repeated use without adding significant bulk or weight to the magazine. Tyrant CNC s proprietary NoBak retention spring technology allows the extension to function reliably without needing a dedicated power spring reducing the chance of feeding issues some extensions introduce. The extension does not fit other lower capacity P365 magazines that use folding flanges so it is specifically matched to the X-Macro magazine. Installation uses the NoBak retention plunger system letting the extension slide onto the bottom of the magazine and lock in place in about 10 seconds with no tools required. Removal is just as fast simply pushing the plunger down and sliding the base plate off. The extension s dimensions were designed to closely match the P365 frame profile helping it minimize printing through clothing during concealed carry. Weighing about 0.3 ounces and compatible with most aftermarket magwells this Tyrant CNC extension is for sale at GrabAGun for P365 X-Macro owners wanting more capacity without losing concealability. Tyrant CNC P365-XMACRO Magazine Extension Specifications Manufacturer: Tyrant CNC Model: P365-XMACRO Magazine Extension Type: Magazine Extension Compatible Hosts: Sig Sauer P365 X-Macro Caliber: 9mm Capacity Increase: +3 Rounds Color: Black Material: Aluminum Length: 1.55 Weight: 0.30 oz Available At: GrabAGun