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Midwest Industries has earned a reputation for building parts that punch well above their weight, and this 10.5-inch carbine-length upper is a great example of that. It comes together as a complete assembly with a forged 7075-T6 aluminum upper receiver, hard coat anodizing, and T-markings across the top rail so lining up your optic and backup sights stays quick and repeatable. The 10.5-inch barrel is 4150 chrome moly with a Melonite finish inside and out, which holds up well against wear and corrosion without adding cost or weight.
The barrel runs a 1:7 twist and a 1/2×28 threaded muzzle, so it stabilizes heavier 5.56 loads and takes standard muzzle devices and suppressor mounts. It's built on a carbine-length direct impingement gas system, which is the right call for a barrel this short since it keeps the rifle running reliably even when things get dirty. M4 feed ramps are cut into the receiver and barrel extension to smooth out feeding, especially useful on a short-barreled setup where timing matters.
Up front you get the MI Combat Series M-LOK handguard, a free-float rail with plenty of real estate for lights, lasers, hand stops, and a sling mount wherever you want it. Midwest also ships this one with their Blast Can already installed, which helps tame some of the concussion and flash that comes with a short 5.56 barrel. The whole group tips the scales right around 2 pounds 8 ounces, keeping your finished build light and nimble.
Keep in mind this ships as a complete upper without a bolt carrier group or charging handle, so you'll want to have those on hand to finish the job. Pair it with any mil-spec AR-15 lower and you're most of the way to a handy, fast-handling carbine. For folks who want dependable Midwest quality without sourcing every part separately, this upper takes a lot of the guesswork out of a short-barrel build.
No, it does not. This ships as a complete upper receiver group without a BCG or charging handle. You'll need to add both to finish the build before you can run it.
The 1:7 twist is on the faster side, which makes it ideal for heavier 5.56 and .223 loads in the 62 to 77 grain range. It'll still shoot lighter bullets fine, but heavier projectiles are where this twist really shines. It's chambered for 5.56 NATO, so it handles both 5.56 and .223 Remington.
Yes. It's built on a forged 7075-T6 mil-spec upper receiver, so it mates up with any standard mil-spec AR-15 lower. Just line up the takedown and pivot pins and you're set.
A shorter barrel needs a shorter gas system to time correctly, and carbine length is the standard match for a 10.5-inch barrel. It keeps the rifle cycling reliably even when it gets dirty. The MI Blast Can up front also helps cut down on the extra flash and concussion that comes with a short 5.56 barrel.
| UPC | 812102031147 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MI-556CRM9-U |
| Barrel Finish | Melonite |
| Barrel Length | 10.5" |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Length | 10.5'' |
| Model | |
| Product Type | Upper |
| Style | Complete |
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