Description
The Ruger AR-556 MPR 350 Legend, 16.38″ Barrel, Magpul MOE SL, Black Hardcoat Anodized, 5rd is a purpose-built modern sporting rifle chambered in the straight-walled 350 Legend cartridge. It’s designed as a versatile, budget-conscious platform for hunters in states with specific caliber regulations and shooters seeking a capable, mid-range AR that’s drop-in ready for the field. This model blends Ruger’s reliable AR-556 foundation with popular Magpul furniture and a caliber that’s gaining serious traction.
Key Features
- 350 Legend Chambering: A straight-walled cartridge legal for deer hunting in many Midwest states, offering solid performance with less recoil than 450 Bushmaster.
- Magpul MOE SL Furniture: Includes the MOE SL stock and pistol grip for improved ergonomics and control right out of the box—no need for immediate upgrades.
- 16.38″ Cold Hammer-Forged Barrel: Provides a durable, accurate barrel with a mid-length gas system for reliable cycling and a smoother recoil impulse.
- Ruger’s MPR (Multi-Purpose Rifle) Configuration: Features an enhanced trigger, radial-port muzzle brake, and full-length M-LOK handguard for mounting optics and accessories.
- Budget-Friendly Platform: At $1064.82, it undercuts many custom-built 350 Legend ARs while offering a complete, proven system from a major manufacturer.
Specifications & Details
| Caliber | 350 Legend |
| Barrel Length | 16.38 inches |
| Overall Length | 34.25-37.5 inches (adjustable stock) |
| Weight | 6.8 lbs |
| Magazine Capacity | 5 Rounds (included) |
| Finish | Black Hardcoat Anodized |
Here’s the thing—this isn’t a plinker. The 350 Legend cartridge is the star, designed to meet specific hunting regulations. It uses standard AR-15 magazines modified for the fatter cartridge, and many brands like C-Products Defense make reliable aftermarket options. The rifle’s 16.38-inch barrel hits a sweet spot, keeping the firearm maneuverable in a blind or thick brush while providing enough velocity for ethical hunting distances. The included 5-round magazine is often the legal limit for hunting, making this setup truly field-ready.
Who This Rifle Is For
This rifle is a prime pick for the Missouri or Midwestern hunter who needs a straight-walled cartridge for deer season but wants the familiar ergonomics and customization of an AR platform. It’s also for the budget-minded shooter who wants a dedicated hunting tool without the premium price of a boutique AR build. If you’re looking at 450 Bushmaster but are recoil-sensitive, the 350 Legend offers a compelling, more shootable alternative. It’s a practical choice over a traditional bolt-action for those who value quick follow-up shots.
Pros & Cons
Pros: The caliber is the main advantage, offering legal compliance and effective terminal ballistics for medium game. The Magpul furniture and Ruger’s MPR enhancements mean you get a feature-rich rifle without the DIY hassle. It’s mil-spec compatible, so triggers, grips, and handguards are easy to swap. Finally, the price is competitive for a complete, name-brand rifle in this niche caliber.
Cons: Ammo cost and variety aren’t as good as 5.56 NATO, so it’s more expensive to practice with. The 350 Legend, while growing, has a smaller aftermarket than the standard AR-15. Some users report the need to tune the gas system with lighter hunting loads, though it’s generally reliable with full-power ammo. It’s a specialist tool, not a general-purpose rifle.
Frequently Asked Questions
Frequently Asked Questions
Q: Will this rifle accept my standard 5.56/.223 AR-15 magazines?
A: No. The 350 Legend cartridge has a larger case diameter and requires specific magazines. The rifle comes with a 5-rounder, but aftermarket options from brands like C-Products Defense are readily available. It will not chamber or fire 5.56x45mm ammunition.
Q: Is the 350 Legend a good deer cartridge out of a 16-inch barrel?
A: Absolutely. The 350 Legend was designed with shorter barrels in mind, and a 16-inch barrel provides ample velocity for clean takedowns on whitetail deer within 200 yards. Its straight-walled design makes it compliant in many states that prohibit bottlenecked rifle cartridges for hunting.
Q: What kind of optic should I put on this rifle?
A: For hunting, a low-power variable optic (LPVO) in the 1-6x or 1-8x range is an excellent match for the cartridge’s effective range. A quality red dot sight is also a great option for closer-range woodlands hunting. The full-length M-LOK handguard gives you plenty of room for a forward mount if desired.
This Ruger AR-556 MPR configuration delivers serious value by bundling a hunting-legal caliber with proven upgrades. It saves you the time and potential fitting issues of piecing together your own upper and lower. Available at firearms-missouri.com for Missouri residents and nationwide, this rifle is a practical solution that gets you from the box to the field with minimal fuss. FFL transfer required for firearm purchases.
See if this hard-working, value-focused AR fits your needs for the upcoming season.
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