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Thread: KAC SR-15 owners - anybody got micrometer?

  1. #11
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    Quote Originally Posted by 87GN View Post
    According to my own experiments, piston/op-rod weapons have hotter gas blocks than DI weapons, which in turn leads to a hotter barrel near the gas block.

    Beyond that, there is going to be little temperature difference between .223 and 5.56. Both have a lot of friction and a lot of heat/pressure.
    According to second sticky in other assault weapons, scar is insignificantly cooler at gb and even more cooler in chamber. Don't know if it makes practical difference in ability to withstand 5.56 vs 223. Thanks to both of you for answering.

  2. #12
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    Quote Originally Posted by YVK View Post
    According to second sticky in other assault weapons, scar is insignificantly cooler at gb and even more cooler in chamber. Don't know if it makes practical difference in ability to withstand 5.56 vs 223. Thanks to both of you for answering.
    Yes, but the SCAR has many different features that may or may not contribute to different temperature profiles, so a direct comparison with an AR requires evaluating more than just one variable change, whereas it is easy to see the differences between otherwise identical gas piston/op-rod and standard ARs. And the chamber area is going to be thicker for all barrel types and operating systems.

    You're welcome.

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