If you have more than a few guns and plan on making any modifications, you will probably need some special tools. Buying a few moderately priced tools will save you plenty of cash in the long run. more »

One of the most over-looked things when buying a gun is the cost of shooting it. The cost of ammunition has been on the rise over the last 5 years and will continue to slowly increase. Read more... more »

As a follow to the article on direct impingement, this article discusses the use of a piston operated gas system. more »

The AR-15 operates using a gas blow back system. This means that as the weapon is fired, some of the gas from a fired cartridge is recycled before leaving the barrel. more »

Buying a used gun can be tricky. Most of the time, you do not know the previous owner or what has been done to the gun. Follow this advise when buying a used gun. more »