And then the EMP hit
And then the EMP hit
For gas blocks, in order of preference... 1) uni-directional taper pin (per spec), 2) set screw in a dimple, staked or high temp locker, 3) everything else. There's really no need to do anything other than 1 or 2.
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Whilst on the subject of Gas Blocks..has it been established..as far as ACCURACY goes..as to which method is better for precision shooting?
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SLR made that one.
https://slrrifleworks.com/
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For me it depends on the app... for magnification or optics-on-bench lo-pro it, if it's a "mid-range or less" Combat or CQB and there's a chance of seeing it get knocked around I want an FSB for durability. If it's bump-in-the-night or BOB and needs quick deployment, I want FSB for the reduced moving parts to deploy, especially if I have a sidefolder to deal with.
That said, I've been toying with an idea if I could find a manufacturer... an all-in-one light-laser-BUIS, something like an Insight M6X mounted upside-down on a top-rail with a sight post and wings on top of it, all three components stacked on the centerline.
EDIT: Of my three-and-a-half (the "half" is a mockup on an unmachined 80%), only one doesn't have an FSB, and of the next four under consideration (12.5" "GL/SSC-ish," M16A4 and C7A2, Holland) only one would be joining it.
Last edited by Diamondback; 08-01-20 at 17:53.
<><><><><><><><><><><><><><><><><><><><><><><><>YOU IDIOTS! I WROTE 1984 AS A WARNING, NOT A HOW-TO MANUAL!--Orwell's ghost
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MSG Jared Van Aalst (KIA, RIP) was one of my NCOs, formerly of the 3rd Ranger Battalion, the USAMU, the infantry sniper school, and Delta. He stated there was definitely a shift with the SPR's rail-mounted front sight if you leaned into the bipod for distance shots.
When I build a rifle, I drill dimples for the gas block set screws. Then I drill for a taper pin. Then I stake the gas block set screws. I’ve never had trouble with in coming loose and never had trouble getting one off.
I had a friend that had to grind off a popular brand’s gas block that was secured with a thread-locking compound because it wouldn’t budge with soaking in carbon remover, hammer taps, or Bob Smith’s Uncure. He eventually stripped both set screws and took the belt grinder to it.
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I still prefer a FSB. I've got 13 uppers, and 11 have a FSB.
If the barrel shifts from strain or heat, the front sight is still in the same relation to the bore.
Plus it's pretty darn solid.
All of mine have a FSB.
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