The Rock Island Armory TM22 is a semi-automatic .22 LR rifle built on a 7075-T6 aluminum receiver with a 20-inch fully-rifled barrel. It ships optic-ready and comes in a Realtree Timber camo finish. The flat-face trigger and 10+1 capacity round out the spec sheet. 
 

Key Specifications 

• Model: TM22 
• Caliber: .22 LR 
• Action: Semi-Auto 
• Barrel Length: 20 inches 
• Overall Length: 36 inches 
• Weight: 6.50 lbs 
• Capacity: 10+1 rounds 
• Trigger Type: Flat Face Trigger 
• Stock: Fixed (Standard grip) 
• Receiver Material: 7075-T6 Aluminum 
• Sights: Optic Ready 
• Finish: Realtree Timber 
   

Features 

The 20-inch barrel is longer than most .22 semi-autos in this class, which gives it a velocity edge and a sight radius advantage when shooting irons. The flat-face trigger is a practical upgrade over the traditional curved triggers typically found at this price point; it gives a more consistent finger placement. The 7075-T6 aluminum receiver is stronger than the 6061 used in many competitors. The optic-ready top means no riser or adapter needed for most scopes and red dots. 
 

Who It's For 

New shooters learning fundamentals, experienced rimfire shooters who want an affordable trainer that mirrors center-fire ergonomics, and small game hunters who need a light (6.50 lbs), maneuverable rifle. The Realtree camo is a plus in the field.

The Rock Island TM22 in Realtree .22 LR gets a generally positive reception, especially given its price point. The 20-inch barrel and flat-face trigger get credit for better-than-expected accuracy, and most users find the optic-ready setup convenient.

The Realtree finish is consistently praised for aesthetics and its practical value for hunters in natural terrain. The semi-auto action is considered easy to run, which makes it a frequent recommendation for new shooters.

Reliability is the main area of concern. A portion of owners report occasional misfeeds or failures to eject, and these tend to be ammunition-sensitive. Bulk .22 LR varies widely in consistency, and the TM22 apparently shows it. Owners who feed it quality ammo report fewer issues. Weight opinions split: at 6.50 lbs it's reasonable for a 20-inch barreled rifle, but some buyers expected something lighter in a .22.

Aftermarket support is limited compared to more established .22 platforms. Customer service experiences with RIA are mixed in online discussions. Overall, the rifle delivers for casual range use and small game hunting at a competitive price, with reliability being the variable to watch.