Milsig M66G Grenade Launcher | Milsig Direct – HR Tactical Innovations Milsig M66G Grenade Launcher | Milsig Direct

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Milsig Direct

Milsig M66G Grenade Launcher with Stock 10.0 lb


Regular price $679.99 USD
Shipping calculated at checkout.


🎁 Holiday & Black Friday Buyer’s Guide 2025

Most in-stock items ship within 3–4 business days.

If an item shows Backorder or Special Order, extra vendor lead time applies.

To ensure delivery before Christmas, place your order by the following dates (includes fulfillment time):

USPS Ground Advantage – Order by Dec 13

USPS Priority Mail – Order by Dec 14

USPS Priority Mail Express – Order by Dec 16

UPS 3-Day Select – Order by Dec 15

UPS 2-Day Air – Order by Dec 18

UPS Next Day Air – Order by Dec 19

International customers: Order by Nov 28 – Dec 5, depending on service and location.

For full vendor lead times and detailed shipping info, read the complete Holiday Buyer’s Guide →

🚚 Shipping Information

Most in-stock items ship within 3 business days.

Special order items are typically processed within 14 business days (excluding weekends and holidays).

Custom items may require additional time depending on production schedules.

If you’d like to receive your order sooner, please select an expedited shipping option at checkout.

Some products ship directly from the manufacturer, and an equivalent carrier or service level will be chosen to match your selected shipping speed.

Shipping delays caused by carriers are outside our control, but we’ll always help track updates.

See our Shipping Policy for details.



🔄 Returns & Warranty Support

Returns are accepted within 14 days for items that are unused, unopened, and in original packaging with no damage.

A restocking fee applies, but it may be partially waived if store credit is selected instead of a refund to the original payment method.

Custom builds, sale items, and hazardous goods are final sale.

Warranty Coverage: Manufacturer warranties apply to all standard products. Any defects, malfunctions, or performance issues are handled directly by the manufacturer per their terms.

HR Tactical Innovations covers a Fitment & Functionality Guarantee on all custom or modified items — if a verified production error occurs, we’ll replace the item.

View our Refund Policy for full details.

🌍 International Customers

We ship worldwide to Canada, Mexico, Europe, Asia, and Oceania, including:

🇨🇭 Switzerland • 🇨🇿 Czechia • 🇩🇪 Germany • 🇩🇰 Denmark • 🇪🇸 Spain • 🇫🇮 Finland • 🇫🇷 France • 🇬🇧 United Kingdom • 🇭🇰 Hong Kong SAR • 🇮🇪 Ireland • 🇮🇹 Italy • 🇯🇵 Japan • 🇰🇷 South Korea • 🇲🇾 Malaysia • 🇳🇱 Netherlands • 🇳🇴 Norway • 🇵🇱 Poland • 🇵🇹 Portugal • 🇸🇪 Sweden • 🇸🇬 Singapore • 🇦🇺 Australia • 🇳🇿 New Zealand • 🇦🇪 UAE and more.

Transit averages 2–4 weeks depending on customs clearance. We are not responsible for customs delays. Reduced transit times are only available through expedited shipping options.

Import duties, VAT, and taxes are not included in your order total and must be paid by the recipient.

If a package is rejected, unclaimed, or returned due to unpaid duties, an incorrect address, or failure to collect, it will be handled under our Refund Policy. Shipping costs are non-refundable in these cases.


Pressurized or restricted items ship ground only where permitted.

Questions? Contact ops@hrtacticalin.com before checkout.

🎖️ GovX Military, First Responder & Teacher Discount

Description

Serious Versatility, Folded Barrel Design

The Milsig M66G is a 42mm multi-purpose launcher built to handle anything from paintball and airsoft rounds to non-lethal defense applications. Designed with a folding barrel, detachable MATs 13ci air-through stock, and the proven GL HeatCore power system, this launcher is one of the most adaptable platforms on the market.

Whether you're launching smoke, rubber, or foam, the M66G’s adjustable internal regulator allows you to fine-tune your velocity for everything from Nerf-safe play to law enforcement-grade deployment.


🔧 Power System

  • GL HeatCore internally regulated blow-forward system

  • Operates on HPA or CO₂

  • Integrated adjustable regulator for tuning velocity from low-impact foam to high-power defense

  • Includes MATs stock – compatible with 13ci HPA tanks


📦 What It Can Shoot

Compatible with a wide range of shells and inserts, the M66G fires nearly any payload within legal limits, including:

  • Golf balls (standard 42mm barrel)

  • Large rubber balls

  • Bean bags, pepper balls, rubber projectiles

  • Foam rockets or foam-tipped projectiles

  • .68 caliber paintballs or shaped rounds

  • Airsoft BBs (via airsoft cartridge)

  • Smoke grenades, signal rounds, or training explosives

  • Custom use payloads like t-shirts for crowd events or creative promotional gear
    (You get the idea…)


🧩 Compatible Barrel Inserts & Shells (Sold Separately)

  • 40mm Shell – For standard 40mm rubber balls, grenades, etc.

  • Paintball Shell – Fires 12x .68 cal projectiles

  • Airsoft Shell – Designed to shoot airsoft BBs

  • Milsig/A5 Barrel Adapter – Use .68 cal barrels for paintball/airsoft chrono compliance or joule-limited builds

  • Optional 36mm Barrel/Shell – For 36mm projectile compatibility (coming soon)


📏 Specs

  • Barrel Diameter: 1.65 in. (42mm)

  • Compatible Tank: 13ci HPA or CO₂ (via MATs stock)

  • Operation: Blow-forward GL HeatCore (adjustable velocity)

  • Barrel: Folding, detachable, optimized for golf ball-size projectiles

  • Applications: Paintball, Airsoft, Law Enforcement, Home Defense, Scenario Use


🚫 What Not to Shoot:

Your unwanted small pets, questionable bedside items, or cursed heirlooms should probably remain outside of the launcher. (Yes, we’re looking at you, stinky dildos and vampire stakes.)


💡 Why Choose the M66G?

This is not a toy. The Milsig M66G is a professional-grade platform built for field utility, crowd control, scenario game immersion, and creative payload delivery. With a broad range of compatible accessories, insert barrels, and shells, it’s the most modular launcher in its class.

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