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The Water Cooler
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Rom PSL-54C & CETME Sporter
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<blockquote data-quote="mmchambers06" data-source="post: 902079" data-attributes="member: 4445"><p>40 rounds don't make it safe. On a delayed-blowback semi-automatic rifle it's a little bit more than a disclaimer. Century is NOT good at putting these together.</p><p></p><p>To elaborate...when Century often botches the barrel installation (which is pressed into the trunion), rather than fix it the correct way, they take the bolt head from the bolt and grind it down to "fix" the headspace. After some wear from the action cycling, the bolt head will rest on the locking piece (instead of the rollers) and the timing of the bolt locking/unlocking won't be correct (read: safe). When the bolt unlocks too soon, the unsupported case will explode (62K PSI...next to your head).</p><p></p><p>And since the barrel is installed incorrectly, installing brand new oversized rollers & an unground bolt won't really fix it.</p><p></p><p>I had one that was "new" from Century and it was dangerously close to being out of headspace. The bolt was ground...all of the CAI CETME's that I've seen have had ground bolt heads.</p><p></p><p>If your bolt gap is right in the middle and is good to go, run it wet to prevent wear and it should make a good rifle.</p><p></p><p>Here's a good video that explains the relationship between bolt gap, headspace, etc. in the CETME:</p><p></p><p><a href="http://www.youtube.com/watch?v=UoLrjpDB51s" target="_blank">http://www.youtube.com/watch?v=UoLrjpDB51s</a></p><p></p><p>I chose to sell mine rather than screw with it. Plus the ergonomics on the G3/CETME are absolutely terrible.</p></blockquote><p></p>
[QUOTE="mmchambers06, post: 902079, member: 4445"] 40 rounds don't make it safe. On a delayed-blowback semi-automatic rifle it's a little bit more than a disclaimer. Century is NOT good at putting these together. To elaborate...when Century often botches the barrel installation (which is pressed into the trunion), rather than fix it the correct way, they take the bolt head from the bolt and grind it down to "fix" the headspace. After some wear from the action cycling, the bolt head will rest on the locking piece (instead of the rollers) and the timing of the bolt locking/unlocking won't be correct (read: safe). When the bolt unlocks too soon, the unsupported case will explode (62K PSI...next to your head). And since the barrel is installed incorrectly, installing brand new oversized rollers & an unground bolt won't really fix it. I had one that was "new" from Century and it was dangerously close to being out of headspace. The bolt was ground...all of the CAI CETME's that I've seen have had ground bolt heads. If your bolt gap is right in the middle and is good to go, run it wet to prevent wear and it should make a good rifle. Here's a good video that explains the relationship between bolt gap, headspace, etc. in the CETME: [url]http://www.youtube.com/watch?v=UoLrjpDB51s[/url] I chose to sell mine rather than screw with it. Plus the ergonomics on the G3/CETME are absolutely terrible. [/QUOTE]
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