The Rock Island Armory TM22 in .22 LR (MPN TM22-A-20) is an AR-pattern rimfire rifle built around a 20-inch black anodized barrel with a 1-in-16-inch twist, giving shooters a longer sight radius and slightly more velocity than the shorter TM22 variants. Armscor/Rock Island Armory ships this rifle optic-ready and includes two 10-round magazines. Among rimfire rifles in the AR rifles category, the TM22 favors plinkers and trainers who want a longer-barreled AR-pattern .22 LR rifle.

Key Specifications

• Chambered in .22 LR.
• Rifled at a 1-in-16-inch rate of twist.
• Features a 20-inch barrel finished in black anodized.
• Holds 10 rounds per magazine.
• Ships with two 10-round magazines included.
• Built on a semi-automatic action.
• Ships optic-ready for a red dot or scope.
• Overall length is approximately 39 inches.
• Weighs approximately 7.75 pounds as shipped.

Frequently Asked Questions

How does this compare to the 18-inch TM22? It uses the same action and twist rate with a longer 20-inch barrel for a longer sight radius.

Does this rifle come with sights? It ships optic-ready rather than with fixed iron sights.

How many magazines are included? Two 10-round magazines ship with the rifle.

Buy the Rock Island Armory TM22 .22 LR, 20-Inch

A longer-barreled, optic-ready AR-pattern .22 LR rifle is exactly what this TM22 delivers. As soon as it is ready to ship, order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.