Colt AR-15 A4 5.56 20-inch Rifle

The Colt AR-15 A4 is a 5.56 NATO/.223 rifle (Colt part no. CR6700A4) built to the classic A4 configuration that generations of shooters have trained and competed with. It’s fitted with a 20-inch government-profile barrel and a 1:7-inch twist rate, giving it the reach and stability to shoot a wide range of 5.56 loads accurately at distance. The fixed A2 stock and removable carry handle keep the profile true to Colt’s original design, with adjustable post front and A2 rear sights providing a proven, reliable zero without relying on electronics. A birdcage flash hider tames muzzle signature, and the matte black finish holds up to hard use at the range or in the field. For shooters who want a rifle built to the specification that defined the AR-15 platform, the Colt A4 delivers it straight from a name synonymous with the gun itself.

Key Specifications

• Chambered in 5.56 NATO/.223 Remington for reliable, widely available performance.
• Fitted with a 20-inch government-profile barrel with a 1:7-inch twist rate.
• Feeds from a 30+1 capacity magazine setup.
• Built with a fixed A2 stock for a rugged, no-frills profile.
• Includes adjustable post front and A2 rear sights with a removable carry handle.
• Fitted with a birdcage flash hider to reduce muzzle signature.
• Finished in matte black for a durable, classic look.

Frequently Asked Questions

What caliber does the Colt A4 shoot? It’s chambered in 5.56 NATO/.223 Remington, the cartridge that defined the AR-15 platform.

Does it have a carry handle? Yes, it includes a removable carry handle with adjustable post front and A2 rear sights.

Buy the Colt AR-15 A4

Shooters who want the rifle that set the standard for the AR-15 platform should look at the Colt A4. Order this Colt rifle from our AR rifle selection at Schaefer Defense, and we’ll ship it insured to your local FFL from our Lubbock, Texas shop.