"Sonic Weld" X FORM 10 Round magazine for 22lr and 17 Mach 2 This magazine is put together using Black Dog's new Ultra Sonic Weld machine. Why? This magazine is an inexpensive product with the same high quality design. We have cut assembly and product costs by eliminating brass and screws. The magazine is user friendly, no more worrying about over tightening screws and brass while assembling magazine.Stainless Steel feed lip from the lost wax casting process. Cleaning: Remove plate, spring and keeper. Use warm soapy water. Let magazine completely dry before you assemble. {{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="42"}}