The Mauser Rimfire TacOps Pk is a semi-automatic .22 LR pistol built on an AR-style rimfire platform. It has a 5-inch black anodized steel barrel with an M16x1 thread pattern and a flash hider, set in a black aluminum frame with a Picatinny rail receiver for mounting optics. The package pairs the pistol with a 110-round drum magazine, bringing capacity to 110+1 for extended shooting between reloads. 
 

Key Specifications 

• Brand: Mauser Rimfire 
• Model: TacOps Pk 
• Caliber: .22 LR 
• Action: Semi Auto 
• Capacity: 110+1 
• Barrel Length: 5" 
• Frame Material: Aluminum 
• Finish: Black Anodized 
• Weight: 4.99 lbs 
   

Detailed Features 

• Picatinny rail receiver gives a mounting surface for a red dot or other optic. 
• M16x1 threaded barrel ships with a flash hider already installed. 
• Trigger is adjustable rather than a fixed factory setting. 
• Overall length of about 15.5 inches keeps the pistol compact despite the drum magazine. 
• Black anodized barrel finish is paired with a black aluminum frame throughout.

Rimfire AR-style pistols like the Mauser TacOps Pk draw shooters who want a lightweight, low-recoil range gun that still feels like handling a full-size platform. Owners generally like that the .22 LR chambering keeps ammunition cheap for high-volume plinking, and the drum-fed capacity means fewer stops to reload during a range session. Reliability opinions on rimfire drums are mixed across the category: some owners get smooth cycling out of the box, others find drum magazines need a break-in period or occasional cleaning to feed consistently.

Handling-wise, the aluminum frame and Picatinny rail keep the pistol light and make it straightforward to add a red dot. A stabilizing brace setup common to this style of pistol is popular for one-handed or two-handed shooting depending on how the owner wants to run it.

Value is usually rated well, since a rimfire AR-style pistol costs far less to feed than a centerfire equivalent, and the drum magazine is seen as a nice inclusion rather than a separate purchase. The adjustable trigger is a detail that more experienced shooters appreciate over a fixed factory trigger.