Built for the serious rimfire shooter who demands precision and versatility, the Howa M1100 18 Inch Barrelled Synthetic Bolt Action Rimfire Rifle brings centrefire-grade engineering to the .22 WMR platform. Chambered in .22 Winchester Magnum Rimfire, this rifle is well-suited to pest control, varmint hunting, and range work where flat trajectory and terminal energy matter at practical distances. Howa's reputation for tight tolerances and quality manufacture is backed here by a SUB-MOA accuracy guarantee, meaning this rifle is rated to shoot groups of less than one minute of angle using premium factory ammunition over three shots at 100 yards. From the cold hammer forged barrel to the two-stage HACT trigger, every major component reflects Howa's commitment to producing rifles that perform above their price point.

Howa M1100 18 Inch Barrelled Synthetic Bolt Action Rimfire Rifle Key Features

• Calibre: Chambered in .22 WMR (.22 Winchester Magnum Rimfire), offering significantly more velocity and energy downrange than standard .22 LR, making it a capable round for rabbits, foxes, and other pest species at extended ranges.
• Cold Hammer Forged Barrel: The 18 inch (45.72cm) barrel is cold hammer forged steel with a #4 varmint contour profile, providing the barrel mass needed to manage heat during sustained shooting and contributing directly to the rifle's SUB-MOA accuracy guarantee.
• HK-Style Polygonal Bore Rifling: Rather than traditional cut or button rifling, the bore features polygonal rifling with a 1:16 inch (1:40.64cm) twist rate. Polygonal rifling offers a better gas seal around the projectile and is gentler on the bore over time compared to conventional rifling.
• Two-Stage HACT Trigger: Howa's proprietary HACT (Howa Actuator Controlled Trigger) is a two-stage design that delivers a consistent, crisp break, giving shooters clear stage separation for precise shot placement whether hunting or on the range.
• 3-Position Safety: The three-position safety allows the bolt to be operated with the safety engaged, so you can safely chamber or clear a round without the rifle being able to fire. This is a practical feature for field use during a hunt.
• Threaded Muzzle: The muzzle is threaded at 1/2 inch x 28 TPI (the standard pitch for .22 calibre suppressors and muzzle devices), and ships with a thread protector cap installed, making it ready to accept a suppressor where permitted under Australian law.
• Tactical/Varmint Synthetic Stock: The stock features a flat beavertail fore-end for a stable rested shooting position, a vertical pistol grip, and a butthook, all moulded in a durable synthetic material that is impervious to weather and will not warp or swell with moisture like timber stocks can.
• Oversized Tactical Bolt Handle: The enlarged bolt handle allows for fast, positive cycling even while maintaining a scope eye line, which is a genuine advantage when follow-up shots matter in the field.
• M-16 Style Extractor and Ejector: The M-16 inspired extractor and ejector system provides reliable case extraction and positive ejection, reducing the likelihood of feeding or ejection issues during use.
• Drilled and Tapped Receiver: The receiver comes pre-drilled and tapped for standard scope bases, making optics mounting straightforward without additional gunsmithing.
• Detachable Box Magazines: Ships with two 10-round detachable magazines included, giving you a spare in the field and reducing downtime during pest control or range sessions.
• Overall Dimensions and Weight: Overall length is 37 inches (93.98cm) and the rifle weighs 6.3 lbs (2.86kg) unloaded, sitting in a practical range for a walk-around hunting or pest control rifle without being cumbersome.
• Matte Blued Finish: The barrel and action wear a matte blued finish that reduces surface glare in the field, helping avoid spooking game or alerting pest species to your position.

The Howa M1100 in .22 WMR represents a strong choice for Australian hunters and shooters looking for a purpose-built rimfire rifle that doesn't cut corners on accuracy or features. Whether you're running a suppressor on it for after-hours rabbit work or punching groups at the range, the M1100 is engineered to deliver consistent, repeatable results straight out of the box.