Glock G42 Mag Ext Insert $1.00 $3.49 (0) No Reviews yet SKU: 6188 Quantity discounts available QuantityPrice QTY. -+ Add to Cart Product Description Glock Mag Ext Insert G42 Order Online or Call Toll-Free: 1-800-601-8273 Reviews 0 BackRatings & ReviewsNo reviews availableBe the first to Write a Review