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I have used four of these low profile gas blocks from Seekins and have had zero issues after 1k plus rounds. Granted that is accumulatively on the round count, but through multiple calibers such as 5.56, 300BLK, and 6.5mm Grendel. All rifles have been run suppressed which is why I opted for an adjustable gas block. I paired the 5.56s and 300BLK with an H2 weight buffer and a Springco carbine blue spring and the 6.5mm Grendel with a H3 buffer and a JP tuned and polished carbine spring. All rifles took about 3-4 rounds to adjust. Once adjusted they piled brass as perfect as a rifle can and I was getting much less gas in the face as I had with other rifles that had fixed gas blocks.
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