HIGHLIGHTS ? Fits 9mm .40 cal Gen 1-3 ONLY; closes open cavity and sits flush at grip base to avoid snags and keep trigger assembly and firing pin debri-free. Replaces factory part with durable aluminum custom base plate ? Made from black-anodized, hard-coat 6061 T6 aircraft billet aluminum ? Laser engraving will not rub off; not painted, not a sticker ? This permanent lasered item, this is not painted on. Bastion laser engraved grip plug, fits Gen 1-3, G17, 19, 24, 31, 32, 34, 35, 37, 38