For shooters who value a blend of durability, accuracy, and parts quality without breaking the bank, a well-built semi-auto platform in 5.56 NATO can deliver repeatable results for range work, training, and defensive use. The package below focuses on practical features that directly affect reliability and shootability for serious shooters.
SHIELD ARMS SA-4 
Overview and condition
OPEN BOX MODEL. BRAND NEW! NEVER SOLD or SHOT. The SHIELD ARMS SA-4 arrives as a 16″ mid-length A2 chambered in 5.56 NATO and trimmed to a combat-ready weight of approximately 6.7 lbs. At a listed price of $499.99, it targets users who want high-value components on a modern semi-auto platform.
HWK XL 5.56 Giveaway
No purchase necessary
Entry link emailed immediately
A third-party retailer is currently hosting a giveaway for an HWK XL 5.56 pistol package (≈ $1,800 retail value).
I track legit firearm & gear giveaways and share the official entry links when they go live.
Key specifications that matter
Barrel and gas system
The 16″ barrel is 4150 CMV, stress relieved after rifling and finished in Black Nitride for corrosion resistance. The mid-length gas system with a .076″ gas port and a 1:7 RH twist gives clean, reliable cycling and supports a wide range of bullet weights for precision and consistency.
Bolt carrier group and upper/lower
7075-T6 forged upper and lower paired with a Black Nitride bolt carrier group that is shot peened and magnetic particle inspected. The bolt material is 9310 for durability, and the carrier is 8620 M16—features you want for longevity and consistent headspace.
Controls and ergonomics
Includes an enhanced mil-spec trigger, Shield Arms ambidextrous safety selector, Magpul MOE SLM grip, B5 Systems Bravo stock, and B5 trigger guard. The Magpul MOE SL mid-length handguard provides a slim profile for accessory mounting and comfortable handling.
Sightline, muzzle, and accessories
Factory equipment includes an A2 muzzle device, Griffin Armament M2 rear sight, and a mil-spec charging handle. The rifle ships with one magazine out of the box—enough to get on the range and evaluate overall performance.
For those interested in a practical 5.56 NATO semi-auto with quality internals and real-world components, this model balances cost and capability. Shop this product to view current stock and purchase options.
Whether you prioritize a corrosion-resistant Black Nitride finish, a mid-length gas system for reduced recoil impulse, or forged 7075-T6 construction, the SHIELD ARMS SA-4 presents a capable baseline for upgrades or use as-is. View product details and pricing and check availability through our shop page where purchases are completed with the retailer.
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People Also Ask
What makes this product stand out from competitors?
This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.
Is this product suitable for beginners?
Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.
What warranty or support is available?
The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.
How does this compare to similar products in its price range?
This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.
What maintenance is required?
Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.
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