tag:blogger.com,1999:blog-5966137191987302885.post5962907707112835390..comments2023-10-28T03:04:16.509-07:00Comments on American Mohist: Modifications to Improve Reliability of Short-Barreled M-16 VariantsJimmyhttp://www.blogger.com/profile/02824445966708680114noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-5966137191987302885.post-55629145765437379692009-10-19T07:19:19.228-07:002009-10-19T07:19:19.228-07:00Dan,
7.62x51 has less case taper, yes, but it doe...Dan,<br /><br />7.62x51 has less case taper, yes, but it does not have many sub-compact carbines. If people start building 7.62x51mm pistols in quantity, then we can expect them to be unreliable for high volume fire as well.<br /><br />Tapered cases have bolt thrust, but the bolt thrust increases with straight cases. It's a simple matter of geometry.Jimmyhttps://www.blogger.com/profile/02824445966708680114noreply@blogger.comtag:blogger.com,1999:blog-5966137191987302885.post-91417323339204603022009-10-16T05:44:13.524-07:002009-10-16T05:44:13.524-07:00One problem with the case taper theory is that the...One problem with the case taper theory is that the 7.62mm NATO case is tapered even less than the 5.56mm NATO. Where are the extraction problems in these weapons?<br /><br />While increased case taper may ease extraction, it also increases bolt thrust. With the bolt lugs pressed harder against the locking recesses in the barrel extension or receiver, it becomes more difficult to open the bolt. <br /><br />FN experimented with heavily tapered 5.56x45mm cases back in the late 1960s. Clearly, this didn't go anywhere.Daniel E. Wattershttp://www.thegunzone.com/556dw.htmlnoreply@blogger.comtag:blogger.com,1999:blog-5966137191987302885.post-14340381849437634912009-06-04T21:06:04.077-07:002009-06-04T21:06:04.077-07:00I'm not sure what you are talking about. If y...I'm not sure what you are talking about. If you want to install the processor heat sinks directly onto your upper receiver, then yes, that may help. If you weld cooling fins onto the barrel, that will act as heat sinks, thus work.<br /><br />Basically, right now the standard AR barrel nut is not optimally designed for heat dissipation. It needs to tightly adhere to the barrel so it can better draw heat away from the chamber. It needs to make tight contact against either the upper receiver or the railed forearm so that it can transfer the heat to them. Or, it needs to be a heat sink with cooling fins. (like POF's.)<br /><br />So those are the considerations.Jimmyhttps://www.blogger.com/profile/02824445966708680114noreply@blogger.comtag:blogger.com,1999:blog-5966137191987302885.post-3555684089542657622009-06-03T22:43:58.920-07:002009-06-03T22:43:58.920-07:00hey just saw your web log from ferfal's surviv...hey just saw your web log from ferfal's surviving in argentina site. this topic is of interest to me, i'm currently building an sbr M4. i was wondering if the thermal compound used to cool micro processors on computers would do any help. and then putting some type of thin metal cover over it, with the cuts. im planning on using a freefloat ras (KAC to be specific) but I don't have the parts yet so im not sure how much clearance there would be.OPERATOR!noreply@blogger.com