The Dimensions of Break Barrel Air Rifles

Written by heath robert
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The Dimensions of Break Barrel Air Rifles
Air rifles have several different dimensions. (Jupiterimages/liquidlibrary/Getty Images)

Air rifles often have the ability to deliver the same amount of force as a small-calibre standard rifle. That makes air rifles perfect for target shooting, plinking or hunting small game. The dimensions of air rifles vary greatly from one model to the next. Understanding how to measure different parts of your air rifle will allow you to determine its exact dimensions. This will help you make decisions about purchasing slings, ammunition, carrying cases and other accessories.


The barrel of the rifle is one of the most important pieces. Generally, the longer the barrel is, the more accurate your rifle will be. That's because the barrel contains rifling that spins the pellet as it leaves the bore. This spinning action makes the pellet fly straighter in the air. To measure your barrel, open the action, exposing the back of the barrel. Measure from the tip of the barrel to the inside of the chamber.

Butt Stock

The butt stock on any rifle will affect how the rifle fits your body. If a stock is too long, it will be difficult to see through the scope or sights. If the barrel is too short, it will probably be uncomfortable to shoot or see down the sights. Measure the butt stock from the end of the recoil pad to the receiver of the gun. Some models of air guns come with adjustable stocks. To adjust a stock, loosen the screw under the recoil pad and pull the stock to the desired length before tightening the screw again.

Scope Rail

Many air rifles contain a rail on the top of the receiver. This rail is used for mounting optics, such as a magnified scope or a red-dot scope. This rail is usually called a Weaver rail, and is compatible with most types of air rifle optics. The optics mount to the rail using two set screws on the optic itself. The rails are designed to hold zero, or maintain the centre of the optic on the bull's-eye at all times. Measure the optics rail from the top of the rail to the last rang on the base of the rail. This will tell you how large of a scope you can mount to the rail.

Accessory Rail

The accessory rail on an air rifle is usually located on the bottom of the barrel. This rail is identical to the optics rail, but its purpose is different. Instead of mounting an optic, the accessory rail can hold lights, lasers or bipods. These accessories mount using similar Weaver-style rails and set screws. Measure this rail the same way as the optics rail, from the top of the rail to the last rang. Lights and lasers take up less room on a rail than an optic, so the size of your accessory rail matters less.

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