Flint River Armory Introduces .45 ACP Carbine

posted on October 28, 2016

Looking for a new pig gun? Flint River Armory of Huntsville, Ala, introduces the world’s first .45 ACP carbine that actually works: the CSA45. That’s because it’s the first .45 ACP carbine to feature a rotating/locking four-lug bolt and a 9mm short-stroke gas piston—designed from scratch.

The upper receiver is built from billet 6061 T-6 aluminum; the monolithic lower encompasses the buffer compartment; diagonal placement of the takedown and pivot pins provide structural strength. This may look like an AR—but it’s not! In fact, the only AR parts used on the CSA45 are an AR lower and a mil-spec fire-control system. The rest of the gun was designed from scratch by the folks at Flint River Armory, a company founded by a retired Navy aviator and staffed solely by engineers. The CSA45 is available as a carbine with a 16-inch barrel; as a short-barreled rifle with a 10-inch barrel; and as a pistol. Overall length of the carbine is 30 inches, and it weighs 6.7 pounds; SBR overall length is 24.9 inches, and it weighs 6 pounds; the pistol measures 24.5 inches and weighs 5.7 pounds.

Company staff tell us there is about as much design R&D put into the firearm’s proprietary, stainless steel, 25-round magazine as the rest of the gun, because it was a chore to design a double-stack, single-feed system that actually worked to feed .45 ACP cartridges. Flint River Armory tells us customers are reporting 1-inch groups at 50 yards from a bench. At least one load tested by the company includes Hornady Critical Defense (200-grain XTP bullet, 900 fps from the carbine).Color options are endless thanks to customer-chosen Cerakote finishes.


Hardware Leupold Mark 5HD Lead
Hardware Leupold Mark 5HD Lead

Hardware: Leupold Mark 5HD 3.6-18X44

If you're in the market for a solid “do-all” scope that will work for hunting, long-range shooting or even tactical applications, the Leupold Mark 5HD is a great choice.

Steiner Introduces Predator 8 Series Hunting Riflescopes

Steiner has expanded its line of hunting riflescopes with the release of Predator 8 series optics. Boasting 8X zoom, the Predator 8 riflescopes join the Steiner Predator 4 series to provide discerning big-game hunters versatility and precision.

#SundayGunday: Leupold DeltaPoint Pro Red Dot Sight

Get a closer look at the Leupold DeltaPoint Pro, the latest addition to our #SundayGunday series.

Rogue Introduces R1000 E-Bike

Rogue Ridge’s RG1000 is the company’s fastest fat-tire e-bike so far. Equipped with a 1,000-watt motor and a 13 amp hour battery, the RG1000 has enough power to handle even steep hillsides.

First Look: Coldfjall Hunting Clothing from Code of Silence

Code of Silence has announced the release of its Coldfjall line of hunting clothing, granting hunters extreme warmth and concealment without unnecessary bulk or noise.

The Ones That Got Away: Bucks That Haunt My Dreams

Do you toss and turn late at night over memories of bucks that got away? Our man does, too. Here are a handful of sleep-robbing tales of bucks that never even gave him a shot.


Get the best of American Hunter delivered to your inbox.