Description
The .350 Legend has earned a loyal following among deer hunters who want real knockdown power without the shoulder abuse, and the Franklin Armory M4-HTF R3 XTD is one of the nicer AR-platform homes for the cartridge. Franklin builds this one around a 16 inch light contour barrel with a 1:12 twist that plays well across the common .350 Legend bullet weights, then caps it with their Aura XTD muzzle device to tame what little recoil the round produces. The result is a rifle that stays flat and lets you watch your hits, whether that is a whitetail at 150 yards or steel plates on a Saturday afternoon.
What Sets the M4-HTF R3 XTD Apart
Instead of a bare-bones parts gun, Franklin Armory dressed this rifle out properly. You get a B5 Bravo adjustable stock and matching B5 grip, a 15 inch free-float M-Lok handguard with plenty of room for lights and bipods, an MFT EVOLV charging handle, and a salt bath nitride bolt carrier for smooth cycling and easy cleanup. The mid-length gas system with a low-profile gas block keeps the action running soft, and the custom tuned trigger breaks clean without the gritty pull you find on typical mil-spec setups. At around 6.8 pounds with a 31.5 inch overall length, it totes nicely through timber and out of a blind.
Running the Franklin Armory .350 Legend in the Field
The flat-top upper wears a full-length Picatinny rail and ships optic ready, so you can mount a low-power variable for hunting or a red dot for closer work. The 10+1 capacity with the included magazine keeps things simple, and the hardcoat anodized aluminum receivers shrug off weather and rough handling. If you have been wanting the AR ergonomics you already know paired with a straight-walled cartridge that hits well above its recoil class, this Franklin Armory checks those boxes without needing a single upgrade out of the box.
Key Specifications
- Manufacturer: Franklin Armory
- Model: M4-HTF R3 XTD
- MPN: 0010055BLK
- UPC: 818752012310
- Caliber: .350 Legend
- Action: Semi-Auto
- Barrel Length: 16" Light Contour
- Twist Rate: 1:12"
- Muzzle Device: Aura XTD
- Capacity: 10+1
- Trigger: Custom Tuned
- Stock: Adjustable B5 Bravo
- Handguard: 15" Free-Float M-Lok
- Sights: Optic Ready, Full-Length Picatinny Rail
- Overall Length: 31.50"
- Weight: 6.80 lbs
What’s Included
- Franklin Armory M4-HTF R3 XTD rifle
- One 10-round magazine
- Owner's manual
Frequently Asked Questions
Does the Franklin Armory M4-HTF R3 XTD come with a binary trigger?
No, this model does not include the BFS-III binary trigger Franklin Armory is known for. Instead it ships with a custom tuned single-stage trigger that has been polished for a smooth pull and clean break. It is a noticeable step up from a standard mil-spec trigger right out of the box.
What is the .350 Legend good for in this rifle?
The .350 Legend is a straight-walled cartridge that delivers solid energy on deer-sized game inside about 200 yards while producing very light recoil. Paired with the 16 inch barrel and Aura XTD muzzle device on this rifle, it is a comfortable setup for whitetail hunting, hog control, and general range shooting. The 1:12 twist handles the common factory bullet weights well.
Will standard AR-15 magazines work with the M4-HTF R3 XTD in .350 Legend?
The .350 Legend uses the same bolt face as 5.56 NATO, but the straight-walled case needs magazines built specifically for the cartridge to feed reliably. This rifle ships with one 10-round .350 Legend magazine, and dedicated .350 Legend mags are widely available if you want spares. Standard 5.56 magazines are not recommended for consistent feeding.
Does this rifle come with sights or an optic?
It ships optic ready with no iron sights installed. The flat-top upper has a full-length Picatinny rail, so mounting a scope, red dot, or backup sights is quick and easy. Most buyers pair it with a low-power variable optic for hunting since that matches the practical range of the .350 Legend nicely.





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