G&P Skull M4 RECCE Polarstar JACK Keymod

Up for sale is a G&P M4 Skull Edition that has been upgraded with the following components:


Polarstar JACK HPA system with JACK FCU

Valken 7.4v 250mah Lipo

ProWin CNC Hopup Chamber

Flat type hopup

13.5” NSR Keymod Rail System

Knights Armament Flip-up Iron sights


Also included at the OEM G&P parts, G&P magazine, and a set of Knights Armament offset flip-up iron sights.  It was built as a DMR and is configured to shoot semi auto in both semi and full auto positions.  Using a longer selector plate, it can be converted back to shooting full auto in the full auto position.

The rifle currently shoots around 350 fps to comply with local cqb fields but the FPS can be adjusted by the user.

As seen in the pictures the FCU and battery fit into the buffer tube.   This makes the rifle more streamlined and low drag.

The Knights Armament flashhider is not included.  It will be replaced with a blaze orange flashhider to comply with the law.  Price is $550