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The Range
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First AR build (looking for tips)
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<blockquote data-quote="JEVapa" data-source="post: 3838548" data-attributes="member: 41176"><p>No, not necessarily. Most all AR receivers (upper and lower) are forgings. There are a bunch of forges that provide these to manufacturers (see list below). What matters is who does the machining to these forgings for a final product. Some places do their own machining and some use Contract Manufacturers (CM). LMT makes their own forgings and mills them themselves as well as provides forgings. Anderson uses various forgings and mills them. Aero, being in Tacoma, and PSA, being in SC, probably don't use the same CM and probably machine their own. They may use the same forgings, but they aren't made by the same people.</p><p></p><p>Companies that make billet receivers, either machine themselves or use CMs. For example, LaRue machines almost everything inhouse minus some small parts. JP does too for the most part as does Geissele. Some companies have CMs make their parts to their specs and then assemble/finish them or some combination thereof.</p><p></p><p>All these forgings are good. It's the end product which is good or bad or mediocre depending on the machining done. I've seen "good" forge marked uppers that suck hind *** and "bad" forge marked uppers that are awesome. It's not the forge but the end maker.</p><p>You can find out what forges are good and bad on AR15.com...<em><u>they know everything,</u></em> you'll know this because they say so.</p><p></p><p>AR receiver forge marks. <span style="color: rgb(26, 188, 156)"><em>Most Common you'll see.</em></span></p><p>A (Splintered) = Anchor Harvey Aluminum</p><p>AF = Alcoa Forge</p><p>C AF = Colt Alco Forge</p><p>C MB = Colt / Mueller Brass</p><p><span style="color: rgb(0, 168, 133)"><em>Cardinal (Stylized) = Cardinal Forge</em></span></p><p>CH = Colt Harvey Aluminum</p><p>Circle/Crosshairs w/ “AR” = ArmaLite</p><p>CK = Colt / Kaiser Aluminum</p><p>CM = Colt / Martin Marietta</p><p>D (Stylized) = Diemaco</p><p>DK = Diemaco / Kaiser Aluminum</p><p>E = Emco</p><p>EK = EMCO / Kaiser</p><p>E MB = EMCO / Mueller Brass</p><p><span style="color: rgb(0, 0, 0)">F Keyhole = FNMI / Cerro Forge</span></p><p>FA = FNMI / Anchor Harvey</p><p>FK = FNMI / Kaiser Aluminum</p><p>FM = FN/Martin Marietta</p><p>FMB = FNMI / Mueller Brass</p><p><span style="color: rgb(26, 188, 156)"><em>Keyhole = Cerro Forge</em></span></p><p>L = Lewis Machine & Tool</p><p>LK = LAR / Kaiser Aluminum</p><p>LM = LAR / Martin Marietta</p><p>M (Under Diamond) = Mueller Industries</p><p>PA = Capco / Anchor Harvey</p><p>PM = Capco / Martin Marietta</p><p><span style="color: rgb(26, 188, 156)"><em>Square = Brass Aluminum Forging Enterprises</em></span></p></blockquote><p></p>
[QUOTE="JEVapa, post: 3838548, member: 41176"] No, not necessarily. Most all AR receivers (upper and lower) are forgings. There are a bunch of forges that provide these to manufacturers (see list below). What matters is who does the machining to these forgings for a final product. Some places do their own machining and some use Contract Manufacturers (CM). LMT makes their own forgings and mills them themselves as well as provides forgings. Anderson uses various forgings and mills them. Aero, being in Tacoma, and PSA, being in SC, probably don't use the same CM and probably machine their own. They may use the same forgings, but they aren't made by the same people. Companies that make billet receivers, either machine themselves or use CMs. For example, LaRue machines almost everything inhouse minus some small parts. JP does too for the most part as does Geissele. Some companies have CMs make their parts to their specs and then assemble/finish them or some combination thereof. All these forgings are good. It's the end product which is good or bad or mediocre depending on the machining done. I've seen "good" forge marked uppers that suck hind *** and "bad" forge marked uppers that are awesome. It's not the forge but the end maker. You can find out what forges are good and bad on AR15.com...[I][U]they know everything,[/U][/I] you'll know this because they say so. AR receiver forge marks. [COLOR=rgb(26, 188, 156)][I]Most Common you'll see.[/I][/COLOR] A (Splintered) = Anchor Harvey Aluminum AF = Alcoa Forge C AF = Colt Alco Forge C MB = Colt / Mueller Brass [COLOR=rgb(0, 168, 133)][I]Cardinal (Stylized) = Cardinal Forge[/I][/COLOR] CH = Colt Harvey Aluminum Circle/Crosshairs w/ “AR” = ArmaLite CK = Colt / Kaiser Aluminum CM = Colt / Martin Marietta D (Stylized) = Diemaco DK = Diemaco / Kaiser Aluminum E = Emco EK = EMCO / Kaiser E MB = EMCO / Mueller Brass [COLOR=rgb(0, 0, 0)]F Keyhole = FNMI / Cerro Forge[/COLOR] FA = FNMI / Anchor Harvey FK = FNMI / Kaiser Aluminum FM = FN/Martin Marietta FMB = FNMI / Mueller Brass [COLOR=rgb(26, 188, 156)][I]Keyhole = Cerro Forge[/I][/COLOR] L = Lewis Machine & Tool LK = LAR / Kaiser Aluminum LM = LAR / Martin Marietta M (Under Diamond) = Mueller Industries PA = Capco / Anchor Harvey PM = Capco / Martin Marietta [COLOR=rgb(26, 188, 156)][I]Square = Brass Aluminum Forging Enterprises[/I][/COLOR] [/QUOTE]
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