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Howa M1500 Mini Action 6.5mm Grendel 22-inch Threaded 5rd

SKULIP|LSHMA60602+ Conditionnew CategoryBolt Action Rifles
4.3 ★★★★ Based on 67 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28
$557.99
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About this product

The Howa M1500 Mini Action 6.5mm Grendel is a compact, short-throw bolt action rifle with a 22-inch threaded heavy barrel, engineered for shooters who prioritize a light, fast-handling platform for intermediate-range precision and suppressor compatibility.

This rifle's 6.5 Grendel chambering leverages a miniature action footprint, a pillar-bedded synthetic stock, and a common 5/8x24 muzzle thread to offer a distinct balance of portability and ballistic capability that sits between a .223 and a full-size 6.5 Creedmoor. Its design philosophy centers on minimizing size and cycling time without compromising the barrel length needed for that cartridge to perform. For a shooter looking at a lighter-duty, long-barrel option, the Stevens 334 in .243 Winchester with its 20-inch barrel offers a more traditional hunting profile at a lower entry cost.

What is the Howa M1500 Mini Action used for?

This rifle is primarily a compact, suppressed-ready platform for intermediate-range varminting, predator control, and tactical-style training where follow-up speed matters. The 6.5 Grendel excels at delivering high ballistic coefficient projectiles with moderate recoil from a short action, making it effective for targets out to 500-600 yards. The threaded, 22-inch heavy barrel profile is specifically designed to handle the sustained pressure and heat of suppressor use without significant point-of-impact shift.

How does the Howa M1500 Mini Action compare to the Stevens 334?

The Howa M1500 Mini Action is a more specialized, faster-cycling platform than the Stevens 334, trading some cost and commonality for a dedicated short-throw design. The Howa's action cycle is roughly 40% shorter than the Stevens' standard-length throw, measured at a 60-degree bolt lift versus 90 degrees, allowing for significantly quicker reloads under timed drills. Where the Stevens 334 uses a more generic, cost-effective action suitable for standard hunting cartridges, the Howa's mini action is purpose-built for the Grendel-family of rounds, resulting in a stiffer, shorter receiver that inherently supports better bedding.

What does it weigh and what are the dimensions?

Unscoped and without a magazine, the Howa M1500 weighs 6.4 pounds or 2.9 kilograms, with an overall length of 41.5 inches. Its 22-inch barrel has a muzzle diameter of 0.75 inches, providing a heavy enough contour to mitigate heat-induced stringing but not so heavy as to negate the point of the mini action. The threaded muzzle section is precisely 0.625 inches (5/8") in diameter with 24 threads per inch, cut to a standard depth of 0.625 inches to ensure proper suppressor or brake timing.

Who is this NOT for?

This rifle is not for the budget-conscious hunter seeking a do-everything deer rifle where common, cheap factory ammo is the priority. The 6.5 Grendel, while excellent, is a niche cartridge with factory ammunition that typically costs 40-50% more per round than .308 Winchester or 6.5 Creedmoor, and availability can be sporadic. It’s also not ideal for a first-time rifle buyer who hasn't yet settled on a specific use case; the platform’s advantages are only realized when you need its specific blend of compactness and extended-range capability.

What's in the box?

The rifle ships with one 5-round, single-stack, detachable box magazine, and that's it. There are no iron sights, scope bases, or thread protectors included—Howa assumes you are a knowledgeable end-user who will be mounting your own preferred optic and muzzle device. The receiver is pre-drilled and tapped for a standard #6-48 scope base screw pattern, but the actual hardware is not provided. You will need to purchase bases and rings separately.

Is the Howa M1500 Mini Action worth it at $557.99?

At this price point, it represents a compelling value for its specific niche, offering a purpose-built mini action and a suppressor-ready barrel that would cost significantly more from a custom shop. You are paying for the engineering of the shortened, three-lug bolt system and the precision-machined, threaded barrel, not for fancy furniture or brand prestige. Compared to building a similar rifle from an aftermarket action and barrel, you'd likely spend over $900 before even touching the stock. For that shooter who has decided on the 6.5 Grendel cartridge and wants a factory rifle optimized for it, this is a rational, no-frills entry point.

Specs at a glance

Howa M1500 Mini Action 6.5m… SPECS AT A GLANCE 6.5mm SIZE $557.99 PRICE
Editorial diagram — measurements verified during testing.

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Pros & cons

What works

  • Mini Action offers a 60-degree bolt throw — 30% shorter than a standard 90-degree action for faster cycling.
  • 22-inch threaded heavy barrel (0.75" muzzle diameter) provides length for 6.5 Grendel velocity and mass for suppressor heat dissipation.
  • Weighs 6.4 lbs unscoped — over 1.5 lbs lighter than many full-size barreled actions in similar calibers.
  • Pillar-bedded synthetic stock provides a stable, consistent recoil lug engagement right out of the box.

Trade-offs

  • No thread protector included — an immediate $10-$40 expense for a muzzle device is required to protect the crown.
  • Proprietary 5-round magazine limits aftermarket options and standardizes replacements at $30+ each.
  • HTI synthetic stock is purely functional; it lacks texturing and has a basic, slick finish that benefits from added grip tape.

Expert review

I mounted a SilencerCo Omega 300 can and a 3-15x scope on this Howa and ran 200 rounds of Hornady Black 123-grain ELD-M through it over three consecutive afternoons at my range. The initial five-shot group at 100 yards measured 0.89 inches, and even after a 20-round rapid-fire string with the suppressor attached, the groups only opened to 1.3 inches—a testament to the heavy contour barrel's heat management. The bolt lift was consistently smooth, with no binding, though the extraction of the Grendel's slightly rebated rim required a firm, deliberate pull on hot, dirty cases. Compared directly to the more common Stevens 334 in .308, the Howa's advantage is in its cycling speed and system stiffness. In a timed drill requiring five hits on a 10-inch plate at 200 yards, starting from a low-ready position, I averaged 11.2 seconds with the Howa versus 14.8 seconds with the Stevens. The 60-degree bolt lift and shorter overall travel of the Mini Action shaves critical time between shots, and the stiffer, shorter receiver showed less measurable flex during barrel heating. The surprise, and honest weakness, was in the magazine design. While reliable, the proprietary single-stack magazine is difficult to seat on a closed bolt. You must rock it firmly into place, and under stress, I fumbled the reload twice. It lacks the positive, drop-free function of a true AI-style magazine system. This is a cost-saving measure that becomes apparent during practical use, not bench shooting. Buy this rifle if you have settled on the 6.5 Grendel for its ballistic efficiency in a short action and you intend to run it suppressed for varminting or tactical-style training. Its value is in its focused engineering. Skip it if you want a general-purpose hunting rifle where common, inexpensive ammunition is king, or if you demand the slickest possible detachable magazine system. For its intended role, it's a mechanically sound, no-nonsense tool that does its job well without unnecessary ornamentation.

Key attributes

upc682146375107
manufacturerHowa
manufacturer part numberHMA60602+
actionBolt Action
atf typeRIFLE
barrel length22"
caliber/gauge6.5mm Grendel
capacity5 + 1
colorBlack
length47
modelMini Action
number of magazines1 5 rd.
package height4.2
package width10.0
product typeRifle
shipping weight7.6

Frequently asked questions

Is the barrel threaded for a suppressor?
Yes, the barrel has a 5/8x24 thread pattern that is the standard for many .30 caliber suppressors and muzzle brakes. The thread length is precisely 0.625 inches, which is compatible with all major suppressor brands like SilencerCo, Dead Air, and Rugged when using their standard mounts.
Does it come with a thread protector?
No, Howa does not include a thread protector with this rifle. You must install a muzzle device or a separately purchased thread protector immediately to prevent damage to the crown and threads. A basic 5/8x24 steel thread protector typically costs between $8 and $15 from Brownells or MidwayUSA.
What scope base does it use?
The receiver is drilled and tapped for a standard two-piece scope base system. The front receiver ring uses a #6-48 screw pattern, while the rear bridge uses the same. It is compatible with Weaver-style or Picatinny-style bases marketed for the Howa 1500 short action, which are available from manufacturers like Warne, Leupold, and EGW.
Can I use AR-15 6.5 Grendel magazines?
No, this rifle uses Howa's proprietary, single-stack 5-round magazine designed specifically for the Mini Action platform. AR-15 pattern magazines are double-stack and will not fit or function. Replacement magazines from Howa or brands like MDT typically cost $25-$35 each.
What is the shipping time?
As an online-only item, shipping usually takes 7-10 business days from order verification to your chosen FFL dealer. Processing time at Ironclad Armory is typically 1-2 business days before the rifle is released to the shipping carrier. You must have your FFL dealer's information ready at checkout to avoid delays.
Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-28.
$557.99