FN's M4 Military Collector Series carbine is a semi-automatic 5.56 NATO rifle with a 14.7-inch barrel, a muzzle brake pinned in place, and a 1:7 twist. The black-finished gun carries a six-position adjustable stock, a Knights Armament RAS rail and a vertical grip, and one 30-round magazine comes with it. The listing shows the condition as Used, while the supplier text describes it as new with a stock photo, so confirm the exact gun before you buy.

In Texas a 5.56 carbine works as a ranch and range rifle, and because it fires centerfire ammunition it is not caught by the state's bar on rimfire for deer. Whether it suits deer in your county comes down to the county page in the Outdoor Annual, where bag limits and antler rules are set. The general season in the North Zone, which includes Bexar County, runs November 7, 2026 to January 3, 2027. The adjustable stock and rail let you set the gun up for an optic and a light.

Key features

• 5.56 NATO, 14.7-inch barrel with pinned brake
• 1:7 twist rate
• Six-position adjustable stock, vertical grip
• Knights Armament RAS rail
• One 30-round magazine included

It ships to the Texas FFL dealer you name at checkout, who runs the federal background check and completes the transfer.