The Smith & Wesson M&P 15 SPORT III is the latest evolution of the popular M&P15 Sport line – a 5.56 NATO/.223 Rem semi-automatic rifle that blends proven AR-15 reliability with modern features and improved shootability.
At its core is a 16″ barrel made from 4140 chrome-moly steel, treated with Armornite® for enhanced corrosion and wear resistance. The barrel uses 5R rifling with a 1:8″ twist, giving excellent performance with a wide range of bullet weights and making cleaning easier compared to traditional rifling. An A2-style flash hider is fitted at the muzzle. gunsamerica.com+1
A key update on the SPORT III is the free-float M-LOK® handguard and mid-length gas system. Free-floating the barrel helps maintain accuracy by reducing pressure on the barrel, while the mid-length gas system softens felt recoil and improves overall shooting comfort – especially noticeable during longer range sessions. tacshaconline.co.za+1
The upper and lower receivers follow the AR-15 pattern, with a flat-top Picatinny rail for mounting optics or iron sights, and a forged lower with integral trigger guard for added strength. Unlike the original Sport, the SPORT III includes a forward assist and dust cover, aligning it more closely with a traditional duty-style AR configuration. gunsamerica.com+2smith-wesson.com+2
The rifle is fitted with a collapsible/adjustable stock, allowing you to set length of pull to suit different shooters or shooting positions. Variants may ship with Magpul MBUS® sights or bundled optics, but the core SPORT III always provides a full-length top rail for easy customisation. camdixwapens.co.za+1
Magazine Capacity
In standard form, the M&P 15 SPORT III is supplied with a 30-round detachable box magazine, giving you a 30+1 round capacity when a round is chambered. The rifle uses the common AR-15/STANAG pattern, so it is compatible with most quality 5.56/.223 magazines in this pattern. camdixwapens.co.za+2Wikipedia+2
This generous capacity, combined with the smooth mid-length gas system and free-float handguard, makes the SPORT III an excellent option for range work, sport shooting and farm or property security roles.
Key Features
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Model: Smith & Wesson M&P 15 SPORT III
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Type: AR-15 style semi-automatic rifle
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Calibre: 5.56 NATO / .223 Remington
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Barrel: 16″ 4140 steel, Armornite® finish, 5R rifling, 1:8″ twist
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Gas system: Mid-length for smoother recoil impulse
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Handguard: Free-float M-LOK® handguard for accessories and improved accuracy
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Receiver: Flat-top upper with Picatinny rail; forged lower with integral trigger guard
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Controls & features: Forward assist, dust cover, standard AR-15 controls
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Stock: Adjustable/collapsible stock
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Muzzle device: A2-style flash hider
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Magazine capacity: supplied with a 30-round detachable STANAG magazine (30+1 capacity)
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Suitable for range and sport shooting, training, farm and property security
Firearms must only be purchased, owned and used by responsible, legally authorised individuals. Always comply with South African firearm legislation, follow the four basic rules of firearm safety every time you handle a firearm, and store firearms and ammunition securely out of reach of unauthorised persons.
