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Ruger

Ruger Harrier 5.56 NATO AR-15 16.1" Barrel M-LOK MOE-K2 30+1 Rounds

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

5.56 Nato

AR-15 platform with 30+1 capacity

16.1-inch Government

Profile barrel with nitride finish

6-groove 1:8-inch

Right-hand twist rifling

Mid-length Gas

System designed to reduce felt

Free-float Slim-profile

Full-length Picatinny rail

$699.99
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SKU: WX2*0749580

Overview

Built on a mil-spec AR-15 platform, this rifle is set up for hunters and shooters who want a modern, configurable carbine for range work and field use. The free-float handguard, full-length Picatinny rail, and Magpul M-LOK slots provide flexible mounting options, while the MOE-K2 grip and collapsible stock support a practical, streamlined setup. Its 16.1" government profile barrel, mid-length gas system, and 5.56 NATO chambering give it a versatile foundation for a wide range of shooting applications. Details like QD sling sockets, a threaded muzzle with A2 flash hider, and mil-spec receiver construction round out a rifle focused on utility rather than excess.

Why Hunters Choose the Ruger

Enhanced Ergonomics

From the slim-profile free-float handguard

Full-length Picatinny

Rail supports optics and accessory

Magpul M-lok

Slots and QD sling sockets

Mid-length Gas

System is designed to reduce

Mil-spec 7075

Type III hard coat anodizing

Key Features

  • 5.56 NATO AR-15 platform with 30+1 capacity
  • 16.1-inch government profile barrel with nitride finish
  • 6-groove 1:8-inch right-hand twist rifling
  • Mid-length gas system designed to reduce felt recoil
  • Free-float slim-profile handguard with full-length Picatinny rail
  • Magpul M-LOK slots and QD sling sockets on both sides
  • Magpul MOE-K2 grip and collapsible stock on a mil-spec buffer tube

Best Used For

  • Range shooters who want a modern AR-15 with free-float handguard and flexible accessory mounting
  • Hunters needing a 5.56 NATO rifle with a slim profile and QD sling sockets for carry
  • Users who prefer Magpul MOE-K2 grip and collapsible stock for familiar AR ergonomics
  • Shooters looking for a mil-spec platform with mid-length gas system and 30+1 capacity
  • Owners planning optics and accessory setups using the full-length Picatinny rail and M-LOK slots

Specifications

Barrel FinishNitride finish
Barrel Length16.1"
Barrel ProfileGovernment profile
Bolt Carrier GroupNitrided bolt carrier group with staked gas key
Buffer TubeMil-spec buffer tube
Caliber5.56 NATO
Capacity30+1
ErgonomicsEnhanced ergonomics
FurnitureQuality furniture
Gas SystemMid-length
GripMagpul MOE-K2 grip
HandguardFree-float handguard
Handguard ProfileSlim profile
Lower Receiver FeatureTension screw
Lower Receiver Material7075 forgings
M Lok Slots3:00, 6:00, and 9:00 positions plus 8 intermediate slots on the muzzle end
Muzzle1/2"-28 threaded muzzle
Muzzle DeviceA2 flash hider
PlatformMil-spec AR-15 platform
RailFull-length Picatinny rail
Receiver FinishType III hard coat anodized
Rifling6-groove
Sling SocketsQD sling sockets on both sides of handguard
StockCollapsible stock
Twist Rate1:8" right-hand twist
Upper Receiver FeaturesForward assist, dust cover, brass deflector
Upper Receiver Material7075 forgings

Pros

  • Enhanced ergonomics from the slim-profile free-float handguard and quality furniture
  • Full-length Picatinny rail supports optics and accessory mounting options
  • Magpul M-LOK slots and QD sling sockets add flexible setup options
  • Mid-length gas system is designed to reduce felt recoil
  • Mil-spec 7075 forged receivers with Type III hard coat anodizing
  • Includes Magpul MOE-K2 grip and collapsible stock on a mil-spec buffer tube

Considerations & Trade-offs

  • Chambered in 5.56 NATO with 30+1 capacity, so it is set up around a standard AR-15 use case rather than a specialized hunting cartridge.
  • The 16.1" government profile barrel and free-float handguard add useful versatility, but they also make this a full-size rifle rather than a compact setup.
  • The included A2 flash hider is functional, but the threaded muzzle means users who want a different muzzle device will need to swap it out.
  • The full-length Picatinny rail and multiple M-LOK slots offer broad mounting flexibility, but they can also encourage adding accessories that increase overall setup complexity.

Suggested Comparisons

  • AR-15 pattern rifles
  • 5.56 NATO semi-automatic rifles
  • Free-float handguard rifles
  • M-LOK-equipped rifles

Suggested Accessories

  • Optic mount
  • Weapon light
  • Two-point sling
  • M-LOK rail covers

Frequently Asked Questions

What caliber and magazine capacity does the Ruger Harrier use?

It is chambered in 5.56 NATO and listed with 30+1 capacity.

What kind of handguard and accessory mounting options does it have?

The Harrier uses a slim-profile free-float handguard with a full-length Picatinny rail on top and Magpul M-LOK slots at the 3:00, 6:00, and 9:00 positions, plus 8 intermediate slots on the muzzle end.

Does the rifle come ready for optics and sling use?

Yes. The upper has a full-length Picatinny rail for optics and accessories, and the handguard includes QD sling sockets on both sides.

What barrel and gas system details are provided?

The rifle has a 16.1" government profile barrel with a nitride finish, 6-groove rifling, a 1:8" right-hand twist, and a mid-length gas system.

What furniture and receiver features are included?

The Harrier includes a Magpul MOE-K2 grip, a collapsible stock on a mil-spec buffer tube, mil-spec dimension 7075 forged upper and lower receivers with Type III hard coat anodizing, and a lower receiver tension screw for a tighter fit.