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Posted: 8/27/2026 8:11:57 PM EDT
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This will be my first build so I want to get it right. I'm having a barrel made and the maker doesn't really have a preference on gas block. Are they all the same? I was looking at the Ripcord Industries gas block and also the Geissele one. If it matters the handguard will be a Geissele MK8. |
| Hey, if you ever plan on suppressing the rifle, either, buy a riflespeed or superlative arms adjustable gas block. Google them and you will know what to buy. If you're never gonna suppress the rifle, any good low pro. gas block will do. |
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Originally Posted By Thefryzone: Hey, if you ever plan on suppressing the rifle, either, buy a riflespeed or superlative arms adjustable gas block. Google them and you will know what to buy. If you're never gonna suppress the rifle, any good low pro. gas block will do. I will be suppressing the rifle but I really do not want to fool with the adjustable gas blocks. I have had a superlative arms gas block and it's always a pain to adjust and use. There's no way to know where you are in the adjustments, you forget, don't know where max and min are later...It was really a pain to me. |
| Look at rifle speed. It is pretty much the top tier gas block. You just have to order the correct length to reach out underneath your hand guard. Better to have an adjustable gas block and not need it than to need an adjustable gas block and not have it. |
All men are created equal. All guns are not.
Joined:
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Originally Posted By Thefryzone: Look at rifle speed. It is pretty much the top tier gas block. You just have to order the correct length to reach out underneath your hand guard. Better to have an adjustable gas block and not need it than to need an adjustable gas block and not have it. I'm planning on the gas port to be .068 so what would an adjustable gas block do for me? Honest question and other than be able to adjust the gas. |
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Attached File |
All men are created equal. All guns are not.
Joined:
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SC, USA
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I use SLR gas blocks, tight fit and inexpensive $42 on sale now. Attached File |
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Originally Posted By Turbo30cal: This will be my first build so I want to get it right. I'm having a barrel made and the maker doesn't really have a preference on gas block. Are they all the same? I was looking at the Ripcord Industries gas block and also the Geissele one. If it matters the handguard will be a Geissele MK8. Just put a ripcord on my newest upper seems nice. Can’t tell that it does anything any better than a cheapo. The o ring thing is pretty cool though. |
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If I have a few around I test which has the best fit tight on the barrel before any screwing. And is staggered a bit off the stop to have the hole centered. But like others have said: SLR - Nice finish and seem mil-spec. Aero Precision - Never had any problems. And I have had good luck with just any old one in my parts box. If you have 2 or 3 just bring them to the gunsmith and let him mock them up. But if this is a fancy looking gun get what you like. |
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Originally Posted By Thefryzone: Fire Team $300.00 more than OCL POLONIUM and heavier.  These things may or may not be important to OP. If he doesn't want an adjustable GB then low back pressure is probably important to him. |
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Originally Posted By FONTY: I use SLR gas blocks, tight fit and inexpensive $42 on sale now. https://www.ar15.com/media/mediaFiles/236598/GB7__16293_webp-3818267.JPG I have one of these and they make it easy for an average person to drill the barrel for pinning. Just need a drill press. |
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@Turbo30cal $20 Uses .0625 port size You can drill it out if you want a larger port YHM Suppressor Gas Block |
Isaiah 1:18 - "Come now, let us reason together," says the LORD: "though your sins are like scarlet, they shall be as white as snow"
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Originally Posted By Fooboy: @Turbo30cal $20 Uses .0625 port size You can drill it out if you want a larger port YHM Suppressor Gas Block These things are fantastic for taking a typically overgassed set up down to dedicated suppressed use. They can be a bit too much if you have a Hi-flow can, a very aggressive brake without a can, an already well gassed barrel, or a combination of those variables. |
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If its going to be a low profile, non-adjustable gas block, then just go with something that is of known good quality. KAK is what I would go with. Now, you mentioned it will be suppressed so something that is adjustable for gas is what I would go with as well. I would recommend a piston conversion for a suppressed rifle. I run the Superlative Piston system on all my AR's. I don't run unsuppressed so once I get the gas dialed in for reliability, that is where it stays. |
| As long as it’s not an aluminum gas block, pick whichever one fits your budget or whichever logo you like |
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