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New Frontier Armory Complete C9 9mm AR-15 Lower Receiver - B5 Stock

Manufactured by New Frontier Armory
Manufactured by New Frontier Armory
3 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

For individual Officer, First Responder, and Military pricing please make sure you are logged in. for details

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal-Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to ffl@primaryarms.com.



This lower cannot be sold in California-- there is no bullet button or magazine lock that fits this lower.

The New Frontier Armory C9 Complete Lower Receiver is the perfect start for your next pistol-caliber carbine build! Designed from the start to accept the battle proven double stack Glock magazines in 9mm, .40 S&W, .357 SIG, and more giving you true multi-caliber flexibility in your build! Fully compatible with most standard and aftermarket AR-15 parts, this lower features a proprietary magazine catch assembly and ejector factory installed, in addition to the ergonomic and proven B5 Bravo collapsible stock.

  • Multi-Caliber marked
  • Compatible with 9mm, .40 S&W, .357 SIG, and more!
  • Accepts Glock magazines
  • Threaded takedown pin spring / detent hole
  • Upper tension screw
  • Threaded bolt catch pin
  • Oversized Winter style trigger guard
  • Precision machined 7075-T6 Aluminum billet
  • Magazine release and ejector factory installed
  • Fully assembled and ready to rock
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BrandNew Frontier Armory
Caliber Marking9mm Luger
FinishHardcoat Anodized
ManufacturerNew Frontier Armory
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154
Weight2.45 lbs
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

3 reviews

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  • 1 star
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A awesome lower


For the price point for a billet lower is great!!! I have built multiple rifles and use quality lowers and this function as good or better in some cases



WOW!!! What a great complete lower !! Paired with a good upper this setup is awesome!! I did change trigger only because I prefer a lighter one. Absolutely nothing wrong or any issues with the trigger that comes in it.

Good quality lower

by -

Great Quality complete lower, everything works and fits as it should.

My only complain is the stock is extremely hard to adjust, but not that big of an issue since I won't need to move it again since I have it set to my liking.