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Posted: 6/25/2012 3:50:40 AM EDT
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Yesterday at the range my gun quit cycling and the front BUIS kept flipping up on its own. After a few manual cycles, fire, and then a click I noticed that a hole had been blown through the top of my gas block.
I recently installed a H2 buffer and a BC 1.0 compensator. I believe the H2 buffer caused it but not quite sure. Any opinions on a cause, or has anyone seen this before? |
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Quoted:
Yesterday at the range my gun quit cycling and the front BUIS kept flipping up on its own. After a few manual cycles, fire, and then a click I noticed that a hole had been blown through the top of my gas block. I recently installed a H2 buffer and a BC 1.0 compensator. I believe the H2 buffer caused it but not quite sure. Any opinions on a cause, or has anyone seen this before? Auto BUIS - nice! Impressive ear protection as well - what are you using? I ran my 16" pistol for a while w/ no gas block & it was LOUD! Headache loud. Gig 'em, backbencher |
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Quoted:
Quoted:
Yesterday at the range my gun quit cycling and the front BUIS kept flipping up on its own. After a few manual cycles, fire, and then a click I noticed that a hole had been blown through the top of my gas block. I recently installed a H2 buffer and a BC 1.0 compensator. I believe the H2 buffer caused it but not quite sure. Any opinions on a cause, or has anyone seen this before? Auto BUIS - nice! Impressive ear protection as well - what are you using? I ran my 16" pistol for a while w/ no gas block & it was LOUD! Headache loud. Gig 'em, backbencher Yea auto BUIS  Its a Sun Devil upper with a 7.5" barrel. Currently mounted on a PSA lower with a pistol buffer tube while I wait on my stamp for the sun devil lower to be SBR. The gas block which blew I belive is a UTG Qual Rail. Its not marked though with a manufacture name. I''m putting a steel YHM 2 rail block on it and I'll see what happens next. Blew the bolt rings out recently too. Its a flaming pig.
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I've had this happen several times with both aluminum and steel gas blocks. Usually the gas tube also have a nice extra hole.. 
Steel lasts much longer, and is the best option. My shorty is well past the 20k mark, and still going strong after some gas block/tube changes.
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