H&K HK 81000531 416 | .22 LR | 10+1 | 8.50 in Threaded Barrel

The HK 81000531 416 is an AR-style .22 LR pistol produced in partnership with Umarex, built to deliver lightweight handling and low-cost shooting for practice and recreation. It features an 8.50 inch threaded black steel barrel, a Flat Dark Earth aluminum receiver with M-LOK and Picatinny rail sections, and flip-up front and rear sights. This configuration is well suited to range training and recreational plinking; a compact red dot such as the Vortex Venom 3 MOA pairs cleanly with the top rail and keeps sight acquisition fast without exceeding typical optics budgets.

Product Specifications

• The manufacturer is Heckler & Koch / H&K.
• The manufacturer part number is HK 81000531 416.
• The caliber is .22 LR.
• The action is Semi-Auto.
• The capacity is 10 + 1.
• The barrel measures 8.50 inches and is threaded for accessories.
• The barrel thread pattern is 1/2″ x 28.
• The barrel material/finish is described as black steel.
• The receiver is finished in Flat Dark Earth aluminum with M-LOK and Picatinny rail sections.
• The grip material is black polymer.
• The sights are flip up front & rear.
• The manual safety is a thumb 90 degree style.
• The overall length is 16.70 inches.
• The listed weight is 4.50 lbs.
• The UPC is 642230260177.

This HK 416 .22 LR pistol provides AR-style ergonomics and controls in a small-caliber package that lowers shooting costs and eases training time on the range. Its threaded barrel and full-length rail let you configure a compact optic and accessory setup while the M-LOK sections preserve lightweight handling. For shooters who value accurate practice and straightforward function, this pistol delivers a practical, easy-to-shoot option for consistent range work and recreational plinking.

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