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The CK-Pro URG in 6.75 black is the stripped version of Cobalt Kinetics' upper receiver group, meaning you get the upper receiver and handguard without a barrel, bolt carrier group, or charging handle already installed. That's a good thing if you already know what barrel and BCG you want running in your rifle, or if you want the flexibility to build in whatever caliber fits your project. The upper is machined from 7075-T6 aluminum and pairs with a matching 6.75-inch handguard, finished in black to match most standard AR builds.
Cobalt Kinetics built this upper around a reverse threaded barrel nut that seats deeper and grabs more thread than a typical mil-spec receiver extension, which helps the barrel sit true and hold its accuracy potential. The handguard then locks onto that same extended section of the upper using 8 TORX screws spread across 4 attachment points, giving you a genuinely non-rotating handguard instead of relying on a cross-bolt or clamp design. A keyed index tab on the receiver makes lining everything up straightforward before you torque anything down, and because the handguard is free-floated off the barrel, you're not fighting POI shifts every time you take it off for cleaning.
The 6.75-inch rail length on this URG is sized to run with a 7.5-inch barrel, and since it ships stripped, it'll accept any barrel built to mil-spec TDP dimensions along with the bolt carrier group and charging handle of your choosing. The handguard offers M-LOK slots plus Picatinny rail up top for optics, lights, or whatever else you're running. Every URG that leaves Cobalt Kinetics passes through their in-house gunsmith staff for assembly, so the fit and finish on the upper and handguard is handled by people who build these platforms every day, not just bolted together on an assembly line.
This one comes ready with the forward assist assembly and ejection port cover already in place, along with the screws, jam nut, and jam nut installation tool needed to mount the handguard yourself. It's a straightforward way to bring the same locking system found on Cobalt's complete rifles to a build you're putting together piece by piece.
No, this is the stripped configuration, so it ships without a barrel, BCG, or charging handle. You'll need to supply your own to finish out the upper, which also means you're not locked into a specific caliber.
The 6.75-inch rail on this URG is built to pair with a 7.5-inch barrel. Cobalt Kinetics designs the handguard and barrel nut around that length so the handguard sits flush and free-floated once assembled.
Any barrel built to mil-spec TDP dimensions will fit the jam nut on this upper. That gives you plenty of aftermarket options rather than forcing you into a proprietary barrel.
Yes, it locks directly to the extended portion of the upper receiver using 8 TORX screws at 4 points rather than relying on the barrel nut alone. That setup is what lets it stay put under stress without putting extra torque on the barrel connection.
| UPC | 850060560286 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CKPROURG675SBLK |
| Product Type | Stripped |
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