The Tippmann Arms M4-22 is a semi-automatic .22 LR rifle with a red Duracoat finish. It has a 16" fluted solid steel barrel, a 25-round magazine, and an adjustable stock that runs from 31.25 to 34.5 inches overall. The TK "Game Changer PRO" compensator reduces muzzle rise on follow-up shots. 
 

Key Specifications 

• Model: M4-22 
• Caliber: .22 LR 
• Action: Semi-Automatic 
• Capacity: 25 Rounds (one magazine included) 
• Barrel Length: 16 inches 
• Overall Length: 31.25 - 34.5 inches (adjustable stock) 
• Finish: Red Duracoat 
   

Features 

The fluted barrel helps with heat dissipation during sustained fire. Flip-up adjustable sights are included. The nickel-plated bolt and aluminum upper/lower receiver keep the weight manageable. An ambidextrous sling adapter plate is built in, and the adjustable stock accommodates different shooter sizes. 
 
The .22 LR caliber keeps ammunition cost low, which makes this rifle practical for high-volume target practice or introducing new shooters to semi-auto operation.

The Tippmann M4-22 Redline gets generally positive marks across most user categories.

Build quality comes up consistently -- owners describe it as solid and durable, and the red finish tends to get attention as something different from standard black rifles. The semi-auto action cycles reliably for most users. Accuracy at typical rimfire distances gets positive mentions for both target shooting and small game use. New and intermediate shooters find it easy to handle.

The 25-round magazine is seen as a practical feature for range sessions. .22 LR ammunition cost makes it affordable to run frequently. Some users discuss customization options and aftermarket modifications.

The main complaint is occasional magazine feeding issues or jamming, though these appear to be less common than the positive reliability reports. Online communities for this model are active, with discussion threads covering maintenance and accessories.

Overall sentiment is favorable, particularly among rimfire enthusiasts looking for an AR-pattern platform at .22 LR running costs.