The Heckler & Koch HK416 Pistol is a rimfire AR-pattern pistol chambered in .22 LR, built with an 8.5-inch barrel and HK416-style controls. It has M-LOK rail space for accessories, a threaded muzzle, and a last-round bolt hold-open, giving it the layout of a centerfire AR pistol scaled down to .22 LR. The HK Brown Cerakote finish and rifle-style controls carry over the look and manual of arms of the centerfire HK416 into a rimfire package. 
 

Key Specifications 

• Brand: Heckler & Koch 
• Model: HK416 Pistol 
• Caliber: .22 LR 
• Action: Semi Auto 
• Barrel Length: 8.5 in 
• Finish: Cerakote, HK Brown 
   

Detailed Features 

• AR-pattern pistol layout modeled on the HK416 
• 8.5-inch barrel with a 1/2x28 threaded muzzle 
• M-LOK rail space for lights, optics, and other accessories 
• Last-round bolt hold-open for standard AR-style charging 
• 20+1 round capacity with a rimfire magazine 
• HK Brown Cerakote finish over the AR-pattern receiver and barrel

Owners of the HK416 Pistol in .22 LR generally like having HK416-style ergonomics and controls in a rimfire platform, since it lets them train or plink with the same manual of arms as a centerfire AR pistol. Reliability with .22 LR ammunition is the main variable owners discuss, since rimfire actions can be more particular about ammo brand than centerfire guns.

Handling-wise, the pistol is noticeably lighter and has less recoil than a true HK416, which many owners see as an advantage for casual range sessions or teaching newer shooters. The M-LOK rail space makes it easy to add optics or a light without extra adapters, and the threaded muzzle is a common upgrade point for owners who already have a suppressor.

Because it copies AR-pattern ergonomics rather than needing dedicated parts, most controls and mounting points feel familiar to anyone who has run an AR-pattern rifle or pistol before. Some owners note that HK-brand rimfire magazines can be less common to find locally than mainstream .22 LR mags, though extras are generally available through HK or authorized dealers.