Glock 21 Magazine Insert New Style Flat $5.00 (0) No Reviews yet SKU: 6187 Quantity discounts available QuantityPrice QTY. -+ Add to Cart Product Description Glock Magazine Insert 21 New Style Flat Order Online or Call Toll-Free: 1-800-601-8273 Reviews 0 BackRatings & ReviewsNo reviews availableBe the first to Write a Review