The Rock Island Armory TM22 is a semi-automatic .22 LR rifle with an 18-inch threaded barrel, AR-style grip, and a fixed stock. Two 10-round magazines are included. The receiver is aluminum with a black anodized finish. At 6.50 lbs and 34 inches overall, it's a standard-size .22 semi-auto. 
 

Key Specifications 

• Caliber: .22 LR 
• Action: Semi-Auto 
• Barrel Length: 18" Threaded 
• Overall Length: 34" 
• Weight: 6.50 lbs 
• Capacity: 10 + 1 rounds (two magazines included) 
• Trigger: Flat Face / 2 - 3.50 lbs pull weight 
• Grip Style: AR Style 
• Stock Type: Fixed 
• Finish: Black Anodized 
• Sights: None (Optic Ready) 
   

Detailed Features 

The flat-face trigger has a listed pull weight range of 2 to 3.50 lbs, lighter than most factory .22 triggers. The threaded barrel accepts suppressors and muzzle devices. No sights are included, but the receiver is optic-ready so a red dot or scope mounts directly. The AR-style grip is ambidextrous in the sense that standard AR grips work for both hands, though the controls themselves are not specified as fully ambi. 
 

Target Audience 

• Budget-conscious shooters who want a semi-auto .22 LR with a flat-face trigger and threaded barrel at a lower price point 
• New shooters learning AR-platform ergonomics without centerfire costs 
• Small game hunters who want a packable rifle with suppressor capability 
   

Usage Scenarios 

• Recreational plinking where the .22 LR's low cost per round allows extended range sessions 
• Small game hunting with standard velocity ammunition where the threaded barrel enables suppressor use 
• Training on AR-style controls before transitioning to a centerfire platform

The Rock Island TM22 in .22 LR is reviewed primarily by budget-minded buyers, and the sentiment reflects what you'd expect from a value-segment rifle.

Price is the leading positive. Owners consider it good value for what it is — a semi-auto .22 LR with a flat-face trigger and threaded barrel at an entry-level price. The flat-face trigger is noted as better than expected for the price, and most owners are satisfied with the accuracy at typical .22 LR ranges.

Build quality feedback is mixed but leans positive for the price point. The black anodized finish is consistently described as durable and clean-looking. Lightweight handling makes it easy for smaller-framed shooters and long sessions.

Reliability is the main area of concern. A subset of owners report feeding failures and jams, particularly with cheap bulk or low-velocity ammunition. Most report that the rifle runs better with higher-quality .22 LR loads. Sensitivity to ammunition is a common trait in semi-auto .22 rifles, but it comes up frequently enough here to be worth noting.

The trigger is also called out as a mixed point — lighter than mil-spec, but some owners find it gritty or inconsistent. Aftermarket accessories specific to the TM22 are limited compared to established .22 platforms, which bothers buyers who want to customize.

Stock comfort divides opinion. Most find it adequate for range use; others note the ergonomics aren't as refined as pricier alternatives.