BASTION Laser Engraved Rear Cover Slide Back Plate Springfield XDS 9mm .40SW .45 ACP Models ONLY - Initials Old English Compatible with Springfield XDS 9mm .40SW .45 ACP models ONLY Is NOT compatible with XD or XDM models Hard coat anodized black, T6 machined aluminum Lasered artwork won't rub off; not painted Replaces factory plastic part