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The Range
Rifle & Shotgun Discussion
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<blockquote data-quote="Ethan N" data-source="post: 3226329" data-attributes="member: 29267"><p>I’m not an expert, but I’ll take a shot at this. Pinned is going to be most secure, but probably not worth the effort and/or cost because a gas block secured with set screws or clamped on is extremely unlikely to move, especially if it’s going to be completely covered by the handguard.</p><p></p><p>I generally would choose clamp over set screws because I believe the pressure applied more evenly over a larger surface area makes for a more secure mating. But I don’t have any evidence for that other than the Military Morons’ test of their clamp-on optic mount (barrel index pin sheared off before the mount moved).</p><p></p><p>I believe I read somewhere that the Superlative Arms adjustable gas block has an oversized gas port. If true, alignment should be hard to mess up even without dimples.</p><p></p><p>I’d say don’t worry about whether the barrel you want to buy is dimpled or not. Buy the barrel you want (or one you get a good deal on). If it’s not dimpled, use a clamp-on gas block. If it is, you have the option of using set screws.</p></blockquote><p></p>
[QUOTE="Ethan N, post: 3226329, member: 29267"] I’m not an expert, but I’ll take a shot at this. Pinned is going to be most secure, but probably not worth the effort and/or cost because a gas block secured with set screws or clamped on is extremely unlikely to move, especially if it’s going to be completely covered by the handguard. I generally would choose clamp over set screws because I believe the pressure applied more evenly over a larger surface area makes for a more secure mating. But I don’t have any evidence for that other than the Military Morons’ test of their clamp-on optic mount (barrel index pin sheared off before the mount moved). I believe I read somewhere that the Superlative Arms adjustable gas block has an oversized gas port. If true, alignment should be hard to mess up even without dimples. I’d say don’t worry about whether the barrel you want to buy is dimpled or not. Buy the barrel you want (or one you get a good deal on). If it’s not dimpled, use a clamp-on gas block. If it is, you have the option of using set screws. [/QUOTE]
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