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ArmaLite is the name that started the whole AR story, and the M-15 Defensive Sporting Rifle is their way of putting that heritage into a straightforward, working-grade carbine. The DEF15 skips the gimmicks and focuses on the stuff that matters: forged 7075-T6 aluminum upper and lower receivers with a hard coat anodized finish, a mil-spec single stage trigger, and a 16 inch chrome moly vanadium barrel built to MIL-B-11595-E standards. At 6.1 pounds it carries easy, swings fast, and won't wear you out over a long range day.
The barrel is where this rifle quietly outclasses a lot of entry-level ARs. It's double lapped for consistency, treated for corrosion resistance and long service life, and cut with a 1:7 twist that stabilizes everything from 55 grain plinking ammo up to heavier 77 grain match loads. The muzzle comes threaded 1/2×28 with a birdcage-style flash suppressor already installed, so swapping in your preferred muzzle device is a five minute job. Chambered for both .223 Remington and 5.56 NATO, it digests whatever ammo you can find on the shelf.
The flattop upper wears a MIL-STD 1913 rail, and the gas block carries its own rail section up front, so mounting a red dot, LPVO, or a set of flip-up sights is simple. Keep in mind it ships optic ready with no sights included, so plan on adding your aiming solution. The 6-position collapsible stock adjusts to fit different shooters, body armor, or winter layers, and the classic A2-style grip and 6 inch polymer handguard keep the weight and the profile trim.
A 30 round Magpul PMAG comes in the box, which is a nice touch since plenty of rifles in this class ship with bargain-bin mags. Whether you're setting up a home defense carbine, a truck gun, or a first AR that leaves room in the budget for ammo and glass, the DEF15 is a solid foundation with a legendary name rolled onto the receiver.
No, this model ships optic ready with no iron sights installed. The flattop upper has a MIL-STD 1913 rail and the gas block carries a rail section up front, so you can mount a red dot, magnified optic, or a set of flip-up sights right out of the box. Budget for an aiming solution before your first range trip.
Yes. The DEF15 is chambered for 5.56 NATO, which means it safely runs both 5.56 NATO and .223 Remington ammunition. That flexibility makes it easy to feed with whatever is available or affordable at your local shop.
A 1:7 twist is on the faster side, which makes it ideal for heavier bullets in the 62 to 77 grain range. It still shoots common 55 grain range ammo just fine, so you're covered whether you're plinking with bulk FMJ or loading up heavier defensive rounds.
Yes, the muzzle is threaded 1/2×28 TPI, which is the standard thread pitch for 5.56 AR-15s. It comes with a birdcage-style flash suppressor installed, and you can swap it for a compensator, brake, or suppressor mount whenever you want to change things up.
| UPC | 651984014240 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | DEF15 |
| Action | |
| Barrel Length | 16" |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 30 + 1 |
| Safety | Lever Action |
| Sights | Optic Ready |
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