Cobalt Kinetics
Cobalt Kinetics builds the CK-Pro, a premium AR-15 platform from St. George, Utah, sold as matched receiver sets and upper receiver groups. Impact Guns carries CK-Pro upper and lower receiver sets with 6.75", 10.8" and 11.8" handguards, stripped upper receiver groups, and complete 5.56 NATO URG uppers. Finishes include Flat Dark Earth and the maker's signature CK Green, so you can build a matched Cobalt rifle or pistol.
Read our full Cobalt Kinetics Buying Guide ↓
Cobalt Kinetics CK-Pro Receiver Sets
A CK-Pro receiver set pairs a matched upper and lower with a handguard. We carry sets with a 10.8" or 11.8" handguard in Flat Dark Earth and a 6.75" set in CK Green. A matched set keeps finish and fit consistent across the build. Add parts from AR-15 Parts.
CK-Pro Stripped Upper Receiver Groups
Cobalt calls its upper the URG, short for upper receiver group. Our stripped CK-Pro URGs come in CK Green with 6.75", 9.8" and 11.8" handguards. Add your own barrel, bolt carrier group and charging handle to finish the upper.
CK-Pro Complete 5.56 NATO Uppers
For a ready-to-run upper, choose a complete CK-Pro URG in 5.56x45mm NATO. We carry a 7.5" barrel version and a 13.7" barrel version, both in Flat Dark Earth. Compare more complete uppers at AR-15 Uppers.
Choosing a CK-Pro Handguard Length
Cobalt's handguard lengths run from 6.75" to 13.7" across our listings. The short 6.75" and 7.5" options suit pistol-length builds. The 10.8" to 13.7" options give more rail space for lights, grips and lasers.
About Cobalt Kinetics
Cobalt Kinetics is based in St. George, Utah. The company states its products are manufactured in the USA for Cobalt Kinetics. Its CK Pro Series covers rifles, uppers and receiver components built around the same design.
Frequently Asked Questions: Cobalt Kinetics
What is the Cobalt Kinetics CK-Pro?
The CK-Pro is Cobalt Kinetics' AR-15 platform. We carry it as receiver sets, stripped upper receiver groups and complete 5.56 uppers.
What does URG mean on a Cobalt upper?
URG stands for upper receiver group. Cobalt uses the term for both stripped and complete CK-Pro uppers.
Where are Cobalt Kinetics products made?
Cobalt Kinetics states its products are manufactured in the USA for the company, which is based in St. George, Utah.
What colors does the CK-Pro come in?
Our CK-Pro listings come in Flat Dark Earth and CK Green, Cobalt's own green finish.
Which CK-Pro handguard is best for a pistol build?
The 6.75" receiver set and the 7.5" barrel URG upper are the shortest CK-Pro options we carry. Check local rules on barrel length before you build.
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