tools. Telescopic and reflex sights offer advantages to people with less experience or poor eyesight by bringing both target and aiming point into focus, while "scopes" also magnify and brighten the image. Drawbacks such as weight, bulk, and complexity can also affect a shooter's performance. Stocks and grips A good stock or grip is one that allows the shooter to have a relaxed but firm grip on the firearm. This can range from minor changes such as texturing grip surfaces or adding a wide, beavertail type grip safety to a 1911, all the way to a custom built, anatomically designed grip that "fits like a glove". Key features are: Structure. A firearm that is properly affixed to the stock, allowing the barrel to float freely as opposed to touching other surfaces, will be more accurate. A stock should also allow the action to be affixed securely and provide a good bedding surface, which sometimes requires the use of epoxy resins. Comfort. This allows the shooter to relax and concentrate on shooting. Control. The shooter must be able to hold the firearm on target, and provide consistent movement under recoil. Positioning. The shooter must be positioned correctly and consistently, allowing easy use of the sights, and a clean trigger pull. Gripping surfaces Gripping surfaces, particularly on handguns, are often designed to provide a large degree of friction to prevent the shooter's grip from shifting. This can be done by either using a material that provides a high friction, such as rubber, or by adding texture to the grips. Traditionally wood grips and stocks are provided with checkering, a process where "V" shaped grooves are cut into the wood at an angle to each other, leaving a pattern of pyramidal projections in the wood. Another process uses a punch to leave a random pattern of dents in the surface, called stippling; this process is better suited to complex curves than checkering, and is often found on anatomical grips. Handguns with plastic frames will often have stippling or checkering molded into the frame. Handgun grips Grips for handguns, especially ones used in single handed disciplines such as bullseye and Olympic handgun shooting, are critical to good accuracy. The grip provides very little control compared to a rifle stock, and so a good fit is required to give the shooter control over the gun and isolate the trigger finger movement. Aftermarket parts makers provide