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The Range
Rifle & Shotgun Discussion
Spike's AR-15
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<blockquote data-quote="RobC" data-source="post: 876001" data-attributes="member: 687"><p>Silencers generate a lot of back pressure. Actually that's how they work, but the back pressure both blows even more junk back into the gun and dries the bolt even faster. Fire a few rounds through your rifle with the suppressor attached then remove the magazine and look at the rounds remaining in the magazine. They will be covered in soot. The ejected brass is nasty, and after a few magazines, my trigger finger will have a line of soot from the hole in the lower where the trigger protrudes. I run my AR BCGs dripping wet in CLP, and four or so magazines of suppressed fire later will leave them dry and nasty. </p><p></p><p>In addition to the fouling and lubrication issues, the back pressure generated by the silencer can be detrimental to the rifle. The bolt will cycle much faster with the silencer attached, and in full auto, the cyclic rate increases significantly. Piston systems vent off excess gas early in the system and theoretically reduce wear and tear on the bolt. </p><p></p><p>For what it's worth, I don't own a piston driven AR, and while I really have no burning desire to own one, I can understand the merits of a piston on short barreled suppressed ARs. My 10 inch suppressed DI ARs run just fine, but they are just toys.</p><p></p><p></p><p>Rob</p></blockquote><p></p>
[QUOTE="RobC, post: 876001, member: 687"] Silencers generate a lot of back pressure. Actually that's how they work, but the back pressure both blows even more junk back into the gun and dries the bolt even faster. Fire a few rounds through your rifle with the suppressor attached then remove the magazine and look at the rounds remaining in the magazine. They will be covered in soot. The ejected brass is nasty, and after a few magazines, my trigger finger will have a line of soot from the hole in the lower where the trigger protrudes. I run my AR BCGs dripping wet in CLP, and four or so magazines of suppressed fire later will leave them dry and nasty. In addition to the fouling and lubrication issues, the back pressure generated by the silencer can be detrimental to the rifle. The bolt will cycle much faster with the silencer attached, and in full auto, the cyclic rate increases significantly. Piston systems vent off excess gas early in the system and theoretically reduce wear and tear on the bolt. For what it's worth, I don't own a piston driven AR, and while I really have no burning desire to own one, I can understand the merits of a piston on short barreled suppressed ARs. My 10 inch suppressed DI ARs run just fine, but they are just toys. Rob [/QUOTE]
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