So you’re looking at AR15 complete uppers to save you time on your next build. Naturally you’re considering things like barrel alloy composi

When building an AR-style rifle with an AR 15 complete upper, you’ll want to make some important decisions as to what parts to pair with it

At MCS Gearup, we sell a wide range of complete, assembled uppers that builders can use to customize or build complete sporting rifles at ho

You can own an AR-15 and enjoy shooting it without ever breaking out a set of tools to do advanced maintenance or make substantial customiza

Not to be confused with the 7.62x51mm NATO, a totally different cartridge with unique ballistic performance, the 7.62x39mm cartridge, develo