Stern Defense 9mm Barrel - 4"Stern 9mm barrels are ideal for gun lovers who want to build their own custom dedicated 9mm AR15 upper group. Our barrels offer an advantage over the competition. Every stern defense barrel throat is machined deeper for a longer free bore to accommodate bullets with a longer ogive. We have found, some common defense rounds jam into the rifling before the round is fully chambered. Some of the barrels on the market do not accommodate this and can and

It is used for any threaded assembly where a thread locker is not a better fit

5 is the world’s first temperature-insensitive BALL® Powder

Stern Defense is located in Missouri and dedicated to helping you build the ultimate pistol caliber carbine

Information:

greatly deters copper fouling

Forward Controls Design now available in heavy duty 4140 chrome moly steel

Oxpho Blue™ is toughest and T-4 next

there is virtually no muzzle flash with Precision Rifle

Gas shield

Hex Security

You can also strike a steel assembly with a brass hammer to shatter the adhesive but this should be done with caution

so be certain to check with your specific scope and mount