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The 6mm ARC has earned a loyal following for one simple reason: it stretches the AR-15 platform way past what 5.56 was ever meant to do, staying supersonic well beyond 1,000 yards while keeping recoil light. Diamondback built the DB15 Obsidian around that cartridge the right way, with an 18 inch medium-taper barrel in 4150 Chrome Moly Vanadium steel, a black nitride finish for corrosion resistance and long bore life, and a 1:7.5 twist that stabilizes the heavy, high-BC bullets this round is known for. A mid-length direct impingement gas system keeps the action running smooth, and the included DB Obsidian muzzle brake takes the already mild recoil down another notch so you can spot your own hits.
This is the upgraded tier of Diamondback's DB15 line, and the parts list shows it. The forged 7075-T6 lower carries a Battle Arms ambidextrous safety selector and mag release, plus a Battle Arms enhanced bolt catch that's easier to lock and drop with either hand. Up top you get a Breek Arms Warhammer ambi charging handle, another piece most folks end up buying separately on a base rifle. The 15 inch free-float M-LOK handguard uses an anti-rotation design with a full-length Picatinny top rail and built-in QD sling sockets, so mounting a bipod, light, and sling takes minutes, not a parts order.
The rifle ships without sights, which makes sense here. A cartridge with this kind of legs deserves glass, and the flat top rail gives you a clean slate for an LPVO or a mid-power precision scope. Magpul's CTR stock and MOE K2 grip round out the ergonomics, the barrel is threaded 5/8×24 if you want to swap muzzle devices, and a 26-round metal magazine comes in the box. At 6.8 pounds bare, it carries well enough for hog and deer work while still holding steady off a bag at the range. American made, mil-spec trigger, and ready to shoot the day you pick it up.
No, this rifle ships without iron sights. The full-length Picatinny top rail on the receiver and handguard gives you plenty of real estate for an optic, and most buyers pair a 6mm ARC rifle like this with an LPVO or a mid-power scope to take advantage of the cartridge's long-range capability.
6mm ARC pushes heavier, more aerodynamic bullets that hold velocity and buck wind far better at distance, staying supersonic well past 1,000 yards. It also hits harder on game, making it a solid pick for deer and hogs at ranges where 5.56 runs out of steam. Recoil stays mild, especially with the Obsidian's included muzzle brake.
Yes. The Obsidian Series lower comes fitted with a Battle Arms Development ambidextrous safety selector and mag release, plus an enhanced bolt catch that's easier to operate from either side. The Breek Arms Warhammer charging handle is ambidextrous as well, so left-handed use is genuinely comfortable rather than an afterthought.
You can. The barrel is threaded in the standard 5/8×24 pattern used by most .30 caliber and 6mm-class muzzle devices, so flash hiders, alternate brakes, and suppressor mounts thread right on. The factory DB Obsidian brake does a nice job taming muzzle rise if you decide to leave it in place.
| UPC | 810035756281 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | DB1784V001 |
| Action | |
| ATF Type | RIFLE |
| Barrel Finish | Black Nitride |
| Barrel Length | 18'' |
| Caliber/Gauge | 6mm ARC |
| Capacity | 26+1-Round |
| Color | Black |
| Length | 7.5'' |
| Magazine Included | 1 x 26-Round |
| Model | |
| Number of Magazines | 1 30 rd. |
| Package Height | 3.5 |
| Package Width | 9.0 |
| Product Type | AR |
| Safety | Yes |
| Shipping Weight | 9.0 |
| Sights | No Sights |
| Thread Pattern | 5/8"x24 |
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