At At a glance: Oversized, 1911-style safety ledge Enhances factory safety Improves hand placement for better grip, control Whether you're a competitive shooter working to improve your speed and accuracy or a weekend plinker looking for better control over your pistol, a strong, proper grip is key. The new "Cornerstone" Safety Thumb Ledge from TANDEMKROSS is the ideal upgrade to boost your control! Now available for the MKIV and MKIV 22/45, the oversized, 1911-style Safety Thumb Ledge, made from anodized aluminum, enhances the external factory safety, without modifying the internals of the safety mechanism. This drop-in part is easy to instal Mfg: Tandemkross