Glock 40 mos for sale Configuration<\/a> is chambered in 10 mm Auto<\/a> and combines<\/a> a long slide and barrel for improved<\/a> velocity with a high<\/a> magazine capacity<\/a>. The Modular<\/a> Back Strap design and the reversible<\/a> magazine catch<\/a> let you instantly<\/a> customize its grip<\/a> to adapt to accommodate<\/a> any hand size. The MOS Configuration<\/a> makes an easy job of mounting a reflex<\/a> sight on the pistol\u2019s slide without the need for a new slide or separate mounting system.<\/span><\/p>\n