Nailgun

Weapon

Common

Auto (1d8), magnetic, reload (30 shots)

D&D Firearm Rules

Check Weapon Properties for Auto & Magnetic properties

This is no longer a utility device; this nailgun has been built for combat.
Derived from magnetically-accelerated firearms, the nailgun inflicts less damage, given its flechettes are accelerated at less speed.
However, given their increased mass, these narrow rods have the capacity of pinning targets to walls and terrain. In a pinch, this could be used to secure a makeshift barricade, although you wouldn’t want to build a house with it.

Pinned (3rd level). If you roll a natural 20 or reduce a target to 0 hit points) and there is a solid surface within 10 feet behind it, the target is pushed to the surface and restrained until the end of your next turn.