The author remixed this model.
The lower part of the Freerunner is modified to include a foregrip/handrest for easier aiming and usage with two hands. Should be comfortably sized for most hand sizes.
An alternate spiky front for use with both the picatinny rail and flat top upper is also included. The ridges provide a tactile method of making sure that the user's fingers are not in the line of fire while using the foregrip. It also looks kind of cool.
An alternate picatinny rail for the picatinny upper is included that adds sights to the top of the rail. The holes in the middle of the sight blocks are sized to fit 1.75mm filament through them for clearer acquisition of the sights while aiming, in a similar method to Rraijjar's Nightingale battery extender.