The Rock Island Armory TM22 is a semi-automatic rifle chambered in .22 LR, built around a 7075-T6 aluminum receiver with a black anodized finish. At 6.5 lbs and 34 inches overall, it handles easily for shooters of most sizes. 
 

Key Specifications 

• Model: TM22 
• Caliber: .22 LR 
• Action: Semi-Automatic 
• Capacity: 10+1 rounds 
• Barrel Length: 18 inches 
• Overall Length (OAL): 34 inches 
• Weight: 6.5 lbs 
• Trigger Type: Flat trigger 
• Stock Material: Fixed with Black Anodized finish 
• Receiver Material: 7075-T6 Aluminum 
• Sights: Optic Ready (no iron sights included) 
• Muzzle: Threaded 
   

Detailed Features 

 
The TM22 ships without iron sights -- it is optic-ready from the factory, so mounting a red dot or rimfire scope is the expected setup. The threaded muzzle accepts suppressors and standard muzzle devices. The flat trigger is a notable inclusion at this price point and helps with a consistent pull. 
 
The 7075-T6 aluminum construction keeps the rifle light while holding up to regular use. The .22 LR chambering means ammunition costs stay low, and recoil is negligible, which makes it well-suited for new shooters building fundamentals or experienced shooters running volume practice. 
 

Usage 

 
The TM22 works for target practice, small game hunting (rabbits, squirrels), and training new shooters on firearm handling before stepping up to larger calibers. It is not configured for duty or defensive use -- this is a sport and training rifle.

The Rock Island TM22 gets a generally positive reception, with most of the enthusiasm centered on the value it delivers for a .22 LR platform.

Accuracy is the standout praise. Shooters report consistent groupings at the range and are often surprised by how well it performs relative to price. The light recoil of .22 LR combined with the flat trigger makes it comfortable to run for extended sessions, and that gets called out often as a reason it suits beginners and experienced shooters alike.

The lightweight 6.5 lb build draws consistent approval for handling and carry, and the optic-ready receiver is seen as a practical choice that keeps the price down while letting users spec their own glass.

Critical feedback clusters around a few specific areas. Some users note fit-and-finish issues that suggest less rigorous quality control compared to higher-end rimfire rifles. Magazine reliability comes up occasionally -- certain ammunition types cause feeding problems, so ammo selection matters. The trigger, while generally liked, gets called out by some shooters as needing a cleaner break for precise target work. Aftermarket support is more limited than for AR-platform rimfires, which is a consideration for buyers who want to customize heavily.