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Will this fit an M&P-10 (.308)? I note some gas block require a process called "dimpling". What is this process? Does this gas block require this? — 1 Answer

by Wrangler 53, from CA, United States Asked on June 5, 2019

Name Guntec USA AR-15 Ultralight Skeletonized Gas Block (5)
$59.95 $31.99 Save 47%
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Answered by Armando R., Gear Expert, from IL, United States, on December 26, 2019

This gas block will fit any AR barrel that uses a .750 diameter gas block. This barrel uses set screws which would highly benefit from dimpling the barrel. Dimpling the barrel is the process of drilling small dimples into the barrel where the set screws can "lock" into place and secure the gas block. The dimples do not need to be deep and only the very tip of the set screws needs to be fit into the dimple. There are a ton of videos of people doing it online themselves, although we recommend you have an experienced gunsmith/armorer do the dimpling.

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