Ed Brown Thumb Safety. Upgrade Your Thumb Safeties. We use these thumb safeties as standard equipment on our pistols. The most ergonomic and attractive thumb safety on the market. The wide safeties allow the shooter to rest the thumb on top of the safety, as all top shooters recommend. Angled slightly to keep thumb from contacting the slide. Tactical safeties are lower profile for carry applications. Ambidextrous safety includes both right and left side needed for strong hand or weak hand applications. A must for left-handed shooters. Requires gunsmithing for safe operation. High quality steel construction. Fully machined for unbeatable quality and no chance of warping or cracking from porosity.