This is an older weapon model, which fires wooden stakes. It was designed in the wake of Painkiller, which features a similar gun. The model package also includes a projectile model, and a high colour skin for the gun, although the palette on that skin remains much the same since the model was designed to work alongside classic Quake weapons.
The model has a firing animation sequence. The sequence is quite long, so you may need to run some of the frames at double speed to get a practical weapon. The animation might have slight interpolation issues, as the stake in the weapon model drops back before sliding back into place. I’m hoping the interpolation is much less apparent on this model than yesterday’s Grenade Launcher, but if it’s an issue check that post for a workaround.