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New Frontier Armory New Frontier Ar9/40 Match Bbl 8" 1:16 40s&w Black
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Runs like a champ.

by BeSmarterThanTheHammerYouSwing, from ME, United States Written on May 21, 2022
f you are just starting out building blowback ar's, and im talking ACTUALLY BUILDING them not just dropping an upper on a lower and saying you built it. YOU MAY WANT TO CONSULT A GUNSMITH or someone thats built one. New frontier makes very nice components that are tough as nails. Having said that I will point out ALOT of common sense goes into these, ESP this caliber. 40s&w IS NOT a round nosed caliber so u will need to polish the chamber and possibly cut a feed ramp in but not much is needed, due to government manufactured shortages I haven't been able to put as many rounds down range as I would like but this barrel is amazingly accurate for the caliber, and runs like a dream. I didn't order via optics planet but directly from nfa. Paired with their upper reciever for lrbho on a diff brand lower, this build is awesome and runs like a dream and lovks back every time even with cheap kci mags.
Pros:
  • Runs great, tough as nails, passed torture test and kept on running, really accurate for this caliber
Cons:
  • May need a feed ramp cut my gunsmith depending on mags and lower
Best Used for:
  • Home defense/hog/banging steel
Would recommend: Yes
2 of 2 found the following review helpful.
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choose another barrel

by Beginner Builder, Verified Owner from WA, United States Written on July 6, 2021
I realize for 40 caliber there’s not many choices. Don’t choose this one until they fix the problem. Barrel has a feeding problem maybe 1 out of 4 will feed in correctly. The rest jam up and put a crease in the brass ruining the casing. Comparing this barrel to my 9mm AR barrel from another brand, the 40 practically doesn’t have a feeding ramp explains why it jams so much. You’d think for the price you’d get decent product.
Would recommend: No
3 of 3 found the following review helpful.
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