Selecting a precision built barrel is a critical step to building your dream AR. That's why a New Frontier Armory Barrel should be your first choice. This is a high quality Chromoly Steel match grade barrel designed and built right here in the USA. It features a chamber for .40 Smith & Wesson and the bore has a 1:16 twist rate. This premium barrel has an integrated feed ramp and a 5/8x24 threaded muzzle. When it comes time to build your next precision AR upper make sure you have a top of the line barrel from New Frontier Armory.

Note:
ALL NFA RULES APPLY!

Specifications and Features:
New Frontier Armory AR-9/40 Barrel BBL-40MG-4
Chambered .40 Smith & Wesson
4" Match Grade Barrel with a 1:16 Twist Rate
High Quality 4150 Chromoly Steel
Integrated Feed Ramp
Threaded Muzzle 5/8x24 TPI
Matte Black Finish
Weight 0.6 lbs
Made in the USA

Fits:
AR-15 Pistols and ATF Registered SBR's (Short Barreled Rifles)

ALL NFA RULES APPLY!