The Bolt Carrier Group in your typical AR15 is where is all complex moving parts operate. The BCG holds the bolt (7) and it's associated parts, the firing pin (2), the cam pin(3), the gas key (6) and ...

You guessed it. We are talking about an AR15 rifle (or an AR10 or AR-15). Direct Gas Impingement means that gas from a fired cartridge is send directly into the bolt carrier group (BCG). This ga ...

The BCG or Bolt Carrier Group is a “group” of parts that work together to load a cartridge into the chamber (battery), extract gas from the barrel (through the gas system), extract, ...

SAA manufactures a full line of complete AR-15 uppers. These are all hand assembled by meticulous SAA armorers and then head spaced and test fired to insure reliable operation.SAA compete uppe ...

Thanks Rick for a great video:Visit Rick @ http://www.airgunweb.com/ ...

You have a few choices on the actual AR-15 upper receiver. Many are available in both forged and billet aluminum. Forged aluminum upper receivers are made by pressing the aluminum into a basic ...

Now I guess we just slap the upper on the lower and off to the range? Not so fast padawan.Does the upper fit the lower? Loose or tight can be acceptable. Too tight or no fit and you might have ...

Now that you've read all about the components of an AR15, you can follow Rick Eutsler on AirgunWeb as he reviews the steps he took with his SAA Upper and Lower. Rick's video is here. Rick basica ...

Well don't all want that! First let's address the obvious: Is your rifle capable of shooting sub MOA and what the heck is MOA? MOA is Minute of Angle (1/60 or a degree) or in math terms amounts ...

SAA offers a few different twist rates for their Complete Uppers and barrels. All modern rifle (and pistol) barrels have rifling cut (or pressed) into the bore (inside). This rifling is called lands ...

Let’s call them stock options. SAA keeps many different buttstocks available. The one most people recognize is the standard A2 (colt) style with a fixed buttstock. The A2 buttstock has a l ...

SAA Complete Upper Troubleshooting Guidelines(for PDF version click here) Surplus Ammo is proud to employ experts on ARs who know all about AR parts and accessories, including the issues they can ha ...