Abstract: In a preferred embodiment, a lug-removing pneumatic impact-gun air blast-deflector divertable of forwardly directed exhaust air blast, of which detachably-mountable air-blast deflector structure is mountable on the gun in a position divertable of forward air blast laterally in each of opposite lateral directions, having a vertically extending apertured portion mounted by a forwardly-located horizontally positioned bolt and inclusive of a horizontal rearwardly-extending portion having a distal end portion distally angled rearwardly-upwardly, thereby forming a laterally and upwardly directed air path positioned in front of air-blast exits of the gun.