The CMMG DefCan 22 is a rimfire suppressor chambered for .22 LR with a 5.5-inch length and a 1/2"-28 tpi direct thread mount. It has a black finish and is designed for direct-thread attachment to rimfire barrels. 
 

Key Specifications 

• Brand: CMMG 
• Model: DefCan 22 
• Caliber: .22 LR 
• Overall Length: 5.5 inches 
• Mount: 1/2"-28 tpi Direct Thread 
• Color/Finish: Black 
   

Detailed Features 

• 5.5-inch overall length in a rimfire-specific configuration 
• 1/2"-28 tpi direct thread mount for standard .22 LR threaded barrels 
• Gen 2 rimfire suppressor platform (Zeroed 22 Gen 2 designation on some listings) 
• Black finish 
• Single-point direct thread attachment without a separate adapter needed on 1/2"-28 barrels

Owners of the CMMG DefCan 22 generally appreciate the straightforward direct-thread design. There are no adapter systems to lose or manage, which gets positive marks for simplicity in the rimfire suppressor category where quick swaps between hosts matter.

The Gen 2 designation is a selling point for repeat CMMG buyers who found the first-generation version adequate but prefer the updated internal geometry. New owners without prior reference tend to evaluate it purely on wet versus dry performance, with most finding dry .22 LR results acceptable for backyard use where permitted.

As with all suppressors, the additional federal paperwork and wait times required prior to transfer are the dominant friction point owners discuss, not the product's own merits. Once transferred, the DefCan 22 is described as easy to clean and maintain relative to multi-piece rimfire designs.