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Cobalt Kinetics built their reputation on tightening up the details most AR builders overlook, and this 11.8" stripped Upper Receiver Group is a good example of that philosophy. Instead of a floating handguard held on by a barrel nut alone, the CK-Pro URG uses a proprietary reverse-threaded receiver extension paired with eight TORX screws to lock the handguard directly to the receiver. That gives you a true non-rotating rail without the added bulk of a monolithic upper, so you get a rock solid mounting surface for optics and accessories without the extra weight.
This particular URG comes in Cobalt Kinetics Green, a earthy grey-green Cerakote finish that's become one of the more recognizable color options in the CK-Pro lineup. The receiver is machined aluminum finished with the same Cerakote coating used across the brand's builds, giving it solid resistance to wear and the elements. Every URG that leaves the shop is put together and test fit by Cobalt Kinetics' own gunsmith staff before it ships, so you're not getting a mystery parts kit thrown in a box.
The 11.8" handguard length on this unit is sized to run with a 12.5" barrel, which is a popular pistol and SBR-length configuration for guys who want a shorter, more maneuverable setup without giving up much rail real estate. Since this is the stripped version, there's no barrel or bolt carrier group included, which means you're free to run whatever caliber and barrel profile fits your project rather than being locked into a factory pairing. The handguard carries M-LOK slots around the bulk of its length along with a continuous top rail, so mounting a light, sling attachment, or backup sights is straightforward.
If you're upgrading an existing lower or starting a new build from scratch, this URG gives you the receiver and rail portion of a Cobalt Kinetics rifle without paying for a complete gun. It's a solid option for anyone who's already sourced their own barrel and internals and just wants the upper half to match that same build quality.
No, this is the stripped version, so it ships with the upper receiver and handguard only. You'll need to supply your own barrel, bolt carrier group, and charging handle to complete the build. That's actually the point of the stripped option, it lets you pick your own caliber and barrel profile instead of being locked into a factory pairing.
The 11.8" handguard is sized to pair with a 12.5" barrel, which is a common length for pistol builds and short-barreled configurations. Running a barrel that's noticeably longer or shorter than that will change how much rail extends past the muzzle device, so keep that in mind when planning your build.
CKG stands for Cobalt Kinetics Green, a proprietary Cerakote color that reads as an earthy grey-green with a slight metallic tone. It's one of the more distinct finish options Cobalt Kinetics offers and holds up well against wear since it's baked on rather than just anodized.
Cobalt Kinetics uses a reverse-threaded receiver extension along with eight TORX screws to clamp the handguard directly to the upper receiver. This creates a genuinely non-rotating rail system that behaves like a monolithic upper without the extra bulk or weight that typically comes with one.
| UPC | 850060560422 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CK-PRO-URG-118-S-CKG |
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