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Posted: 3/2/2017 1:12:39 PM EDT
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Hello,
My barrel has no dimples under gas block. Should I use a clamp on or regular gas block? Thanks. Tom |
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Is the gas block going to be under a free float handguard? If so, either will be fine. Just use Red Loctite on the set screws.
If it sticks out past the handguard, I'd use a clamp-on style simply because there's a potential for it to get bumped on something. If it is a gas block with front sight post, you should look at getting it drilled and pinned because the front sight can get hit and twist the gas block. |
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Get and use this, with an 11/64 drill bit and a hand drill. Then your barrel will be dimpled and the gas block will stay put.
https://www.rainierarms.com/rainier-arms-gas-block-barrel-dimpler 
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Quoted:
Get and use this, with an 11/64 drill bit and a hand drill. Then your barrel will be dimpled and the gas block will stay put. https://www.rainierarms.com/rainier-arms-gas-block-barrel-dimpler https://www.rainierarms.com/media/product/4dc/rainier-arms-gas-block-barrel-dimpler-ra-dimple-by-rainier-arms-llc-81f.jpg OUT OF STOCK... Haven been for a while as are pretty much every other vendor selling these. ETA: Clamp on |
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I have an SLR Rifleworks dimpling jig that I use on my barrels. It's cheaper than the Rainier Arms one and does two different spacings (.400 & .450). It's also in stock on their site, as well as JoeBobs, and other places.
SLR dimpling jig |
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Quoted:
I have an SLR Rifleworks dimpling jig that I use on my barrels. It's cheaper than the Rainier Arms one and does two different spacings (.400 & .450). It's also in stock on their site, as well as JoeBobs, and other places. SLR dimpling jig You sure its in stock? because it says out of stock on my screen... |
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Quoted:
You sure its in stock? because it says out of stock on my screen... When I posted the link it was. They are same price and currently in stock at the other place I mentioned Joe Bob Outfitters |
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Quoted:
Is the gas block going to be under a free float handguard? If so, either will be fine. Just use Red Loctite on the set screws. If it sticks out past the handguard, I'd use a clamp-on style simply because there's a potential for it to get bumped on something. If it is a gas block with front sight post, you should look at getting it drilled and pinned because the front sight can get hit and twist the gas block. Military Morons test clamp gas block/front sight. Tl;Dr version. You'll sheer you barrel index pin and deform your upper before a property installed clamp on gas block rotates. OP I went with a SLR Sentry clamp on, couldn't be happier |
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I just dimpled my first barrel. Nothing to it. Just take your time - no special jigs needed, but certainly could be used.
All you need is a pencil, straight edge (a piece of paper works just fine), center punch, drill bit and drill. Tip: The gas block and port don't necessarily line up perfectly when you put the block up against the shoulder on the barrel. Put the block on upside down and look through the set screw hole, now just line up the holes and note how far off the shoulder you need to be for perfect fore / aft alignment. |
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