AR15 Upper

AR15 can be assembled in many different ways, and this guide can’t go over everything, but we will cover an good AR15 upper build parts list from budget to expensive. So be sure to bookmark this page for future references. In the gun world, there are many things that you absolutely don’t need. Some are extremely […]

In an AR-15, the gas block sits neatly underneath the handguard, positioned right above a strategically placed hole atop the barrel. Most AR-15 rifles have the 0.750″ diameter gas port barrel. Here’s how it works: when you fire a round, a portion of the gas produced zips back through the gas tube and travels back into