Utilizing modern manufacturing processes, Summit manufactures purpose built gear for a wide range of firearms. View cart “Summit 1/2″ Crush Washer” has been added to your cart. Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Showing all 4 results Quick View Quick View Magazine Base PadsSummit Arms Vector 22 Magazine Extension $24.95 Add to cart Quick View Quick View Pistol GripsSummit AR Ergo Pistol Grip $34.95 Add to cart Quick View SOLD OUT Out of Stock Quick View Magazine Base PadsSummit M&P 15-22 Magazine Extension – Faux 30 Round $29.95 Out of stock Quick View SOLD OUT Out of Stock Quick View Magazine Base PadsSummit M&P 15-22 Magazine Grab Plate $24.95 Out of stock