Bastion rear slide cover plate for Smith & Wesson S&W M&P shield 9mm .40 only, butt plate with laser engraved image - Bastion Tactical Skull Compatible with Smith & Wesson M&P 9mm SHIELD Model ONLY Is NOT compatible with SW MP 9mm full/compact models or new .45 model. Hard coat anodized red T6 machined aluminum Lasered artwork won't rub off; not painted Does Not Fit Compact or Full Size models including new .45 model