ATI Outdoors152747804
Upper 5.56 16" Blackati Mil Sport Complete Ar-15$268.70
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Availability: In Stock
Current Stock: Out of stock
The ATI Mil Sport Complete AR-15 upper in 5.56 NATO with a 7.5" barrel is a ready-to-run solution for builders who want a compact, complete upper that handles shooting duty right out of the box. Built on the proven AR platform, this short-barrel upper delivers the versatility you need for close-quarters work, home defense, or a nimble truck gun—without the paperwork headaches of a registered SBR if you pair it with a pistol lower. The 1:8 twist rate stabilizes a full range of 5.56 ammunition, from lightweight varmint loads to heavier tactical rounds.
What makes this upper genuinely useful is that it comes complete: bolt carrier group and charging handle are already installed, so you're not hunting for parts or sorting through compatibility charts. The 7" M-LOK rail gives you solid real estate for lights, optics, and accessories while keeping the overall package compact and quick-handling. Everything is finished in black and ready to mount to your lower receiver.
Whether you're building a pistol, SBR, or short-range competition gun, this ATI upper takes the guesswork out of sourcing a short-barrel complete assembly. It's a no-nonsense, affordable way to get a functional 5.56 upper that actually shows up ready to work.
| Caliber | 5.56 NATO |
| Barrel Length | 7.5" |
| Twist Rate | 1:8 |
| Handguard | 7" M-LOK |
| Configuration | Complete (includes BCG and charging handle) |
| Finish | Black |
This is a complete upper assembly. The bolt carrier group and charging handle come installed and ready to function—you just mount it to your lower receiver.
This upper is designed for standard AR-15 lower receivers. Verify that your lower is compatible with 5.56 NATO and a direct-impingement system.
That depends on your lower receiver. If you pair this upper with a rifle-length lower (16" or longer overall), you have a legal rifle. If you use a pistol lower, the short barrel means SBR registration may be required—check your state and federal laws.
Yes. The 7" M-LOK rail accepts M-LOK-compatible accessories for mounting optics, lights, slings, and other gear.
SKU: 152829042 • Width: 8.75in • Height: 5.45in • Depth: 28.1in
Availability: In Stock
Current Stock: Out of stock
The ATI Mil Sport Complete AR-15 upper in 5.56 NATO with a 7.5" barrel is a ready-to-run solution for builders who want a compact, complete upper that handles shooting duty right out of the box. Built on the proven AR platform, this short-barrel upper delivers the versatility you need for close-quarters work, home defense, or a nimble truck gun—without the paperwork headaches of a registered SBR if you pair it with a pistol lower. The 1:8 twist rate stabilizes a full range of 5.56 ammunition, from lightweight varmint loads to heavier tactical rounds.
What makes this upper genuinely useful is that it comes complete: bolt carrier group and charging handle are already installed, so you're not hunting for parts or sorting through compatibility charts. The 7" M-LOK rail gives you solid real estate for lights, optics, and accessories while keeping the overall package compact and quick-handling. Everything is finished in black and ready to mount to your lower receiver.
Whether you're building a pistol, SBR, or short-range competition gun, this ATI upper takes the guesswork out of sourcing a short-barrel complete assembly. It's a no-nonsense, affordable way to get a functional 5.56 upper that actually shows up ready to work.
| Caliber | 5.56 NATO |
| Barrel Length | 7.5" |
| Twist Rate | 1:8 |
| Handguard | 7" M-LOK |
| Configuration | Complete (includes BCG and charging handle) |
| Finish | Black |
This is a complete upper assembly. The bolt carrier group and charging handle come installed and ready to function—you just mount it to your lower receiver.
This upper is designed for standard AR-15 lower receivers. Verify that your lower is compatible with 5.56 NATO and a direct-impingement system.
That depends on your lower receiver. If you pair this upper with a rifle-length lower (16" or longer overall), you have a legal rifle. If you use a pistol lower, the short barrel means SBR registration may be required—check your state and federal laws.
Yes. The 7" M-LOK rail accepts M-LOK-compatible accessories for mounting optics, lights, slings, and other gear.
SKU: 152829042 • Width: 8.75in • Height: 5.45in • Depth: 28.1in