Description
The SMITH AND WESSON M&P-15 SPORT II 5.56 NATO / .223 REM 16″ BARREL 30-ROUNDS is a no-frills, reliable AR-15 platform rifle built for duty, defense, and high-volume range use. It delivers proven performance with a 16-inch barrel chambered in 5.56 NATO, accepting both that round and .223 Remington, and comes ready to run with a 30-round magazine. This is the workhorse AR you grab when reliability can’t be a question.
Key Features
- Proven Reliability: A direct impingement gas system and hard-coat anodized aluminum receiver provide consistent cycling you can count on under pressure.
- Versatile Chambering: The 5.56 NATO chamber safely fires both 5.56mm and .223 Remington ammunition, giving you flexibility in sourcing practice and defensive loads.
- Ready to Customize: The rifle features a standard carbine-length handguard and a flat-top upper receiver with a Picatinny rail, allowing for immediate optic or sight mounting. It’s drop-in ready for a vast ecosystem of AR-15 accessories.
- Durable Construction: A 4140 steel barrel with a 1:9″ twist rate, manganese phosphate coating, and a Melonite® finish ensure corrosion resistance and long service life.
Specifications & Details
| Caliber | 5.56 NATO / .223 Rem |
| Barrel Length | 16″ |
| Overall Length | 32″ – 35.5″ (Stock Collapsed/Extended) |
| Weight (Unloaded) | Approx. 6.5 lbs |
| Magazine Capacity | 30 Rounds (1 included) |
| Twist Rate | 1:9″ |
Weighing in at roughly 6.5 pounds unloaded, the Sport II handles intuitively, striking a solid balance between stability and maneuverability. The 16-inch barrel length is the legal sweet spot, providing good velocity without sacrificing handling in tight spaces—a critical consideration for a home defense scenario. The rifle ships with one 30-round Magpul® PMAG, a proven and durable magazine that fits out of the box. At $611.99, this rifle represents a significant value in the AR-15 market, offering Smith & Wesson’s quality control and warranty at an accessible price point.
Who This Rifle Is For
This is the first AR-15 for the new shooter who wants a trustworthy foundation. It’s the backup rifle for the seasoned enthusiast who needs a tool that just works. It’s for the Missouri landowner who requires a versatile platform for property defense and varmint control. If your priority is fundamental reliability over flashy features, the Sport II is your answer. It’s built for the real world, not the Instagram feed.
Pros & Cons
Pros: Exceptional reliability and value for money. Uses mil-spec components for broad compatibility with aftermarket triggers, grips, and stocks. The 5.56/.223 chambering offers wide ammunition availability. Backed by Smith & Wesson’s lifetime service policy. Its straightforward design means no gunsmithing required for most common upgrades.
Cons: The basic handguard gets hot during sustained fire and lacks modular attachment points. The 1:9″ twist rate is ideal for mid-weight bullets but may not stabilize the heaviest 70+ grain projectiles as well as a 1:7″ or 1:8″ barrel. It’s a carbine-gas system on a 16″ barrel, which can be a bit gassy for some shooters.
Frequently Asked Questions
Q: Is this rifle ready to shoot right away?
A: Yes. It comes new in the box with one 30-round Magpul PMAG. You will need to supply your own optic or iron sights, as it ships with a flat-top upper receiver and a standard A2 front sight post. FFL transfer required for firearm purchases.
Q: Can I use .223 Wylde barrels or uppers with this lower receiver?
A: Absolutely. The lower receiver is a standard mil-spec AR-15 pattern. It is fully compatible with any mil-spec upper receiver assembly, including those chambered in .223 Wylde, which is known for enhanced accuracy with both .223 Rem and 5.56 NATO rounds.
Q: What’s the real difference between 5.56 and .223 for this rifle?
A: You can safely fire both. The 5.56 NATO chamber has slightly higher pressure tolerances. Firing 5.56mm in a .223-chambered rifle is unsafe, but the reverse is fine. This rifle’s 5.56 chamber gives you the full spectrum of available ammunition. That said, for pure precision shooting with lighter bullets, many find .223 Remington match ammo performs excellently.
Ready to add this foundational firearm to your collection? This SMITH AND WESSON M&P-15 SPORT II is available at firearms-missouri.com for Missouri residents and nationwide.
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