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The Range
Rifle & Shotgun Discussion
Where Have All The AR Parts Gone?
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<blockquote data-quote="Glocktogo" data-source="post: 1750814" data-attributes="member: 1132"><p>Yes, the dreaded chart: <a href="http://m4carbine.net/showthread.php?p=1019457#post1019457" target="_blank">http://m4carbine.net/showthread.php?p=1019457#post1019457</a></p><p></p><p>FYI, if you're going to review the chart, don't make the mistake of just looking at the manufacturer features. Read all the tabs first and understand what you're going to get from it and more importantly, what you're not going to get.</p><p></p><p>Obligatory chart hate: <img src="/images/smilies/biggrin.png" class="smilie" loading="lazy" alt=":D" title="Big Grin :D" data-shortname=":D" /></p><p></p><p><img src="https://www.okshooters.com/data/MetaMirrorCache/i151.photobucket.com_albums_s157_Glocktogo_HateChart.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p></p><p></p><p>Where to start? <img src="/images/smilies/smile.png" class="smilie" loading="lazy" alt=":)" title="Smile :)" data-shortname=":)" /></p><p></p><p>The TDP for a military grade M4 carbine will have all of these things: Shot Peened Bolt; High Pressure Test (HPT) Bolt; Magnetic Particle Inspection (MPI) Bolt; Black Extractor Spring Insert (carbine); M16 Bolt Carrier; Properly Staked Gas Key; Milspec Barrel Steel (4150 or better); High Pressure Test (HPT) Barrel; Magnetic Particle Inspection (MPI) Barrel; Chrome Lined Chamber and Bore; 5.56 Chamber; 1:7 Rifling Twist; M4 Feedramps; "F" Height Front Sight Base; Taper Pins at Front Sight Base (FSB); Parkerize under FSB; Double Heat Shield Handguards; 1.14" Diameter Receiver Extension; Staked Castle Nut; "H" Buffer.</p><p></p><p>The entire TDP can't be followed 100% for a civilian carbine (no select fire capability). The TDP will specify small but important details, such as the grade of hex key bolts used to attach the gas key to the bolt carrier. It will also specify assembly steps and parts interchangeability. Just because something differs from the TDP doesn't mean it's automatically inferior, just different. The trick is to research that difference and determine if it's an improvement to the product, to the manufacturing process, or to the bottom line of a company that takes shortcuts. In some instances, it may be cost effective to buy a cheaper brand and make some inexpensive upgrades. In many cases an inferior brand will cost as much as a quality brand due to marketing hype and uninformed opinions. The trick is to know the difference. <img src="/images/smilies/smile.png" class="smilie" loading="lazy" alt=":)" title="Smile :)" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Glocktogo, post: 1750814, member: 1132"] Yes, the dreaded chart: [url]http://m4carbine.net/showthread.php?p=1019457#post1019457[/url] FYI, if you're going to review the chart, don't make the mistake of just looking at the manufacturer features. Read all the tabs first and understand what you're going to get from it and more importantly, what you're not going to get. Obligatory chart hate: :D [IMG]https://www.okshooters.com/data/MetaMirrorCache/i151.photobucket.com_albums_s157_Glocktogo_HateChart.jpg[/IMG] Where to start? :) The TDP for a military grade M4 carbine will have all of these things: Shot Peened Bolt; High Pressure Test (HPT) Bolt; Magnetic Particle Inspection (MPI) Bolt; Black Extractor Spring Insert (carbine); M16 Bolt Carrier; Properly Staked Gas Key; Milspec Barrel Steel (4150 or better); High Pressure Test (HPT) Barrel; Magnetic Particle Inspection (MPI) Barrel; Chrome Lined Chamber and Bore; 5.56 Chamber; 1:7 Rifling Twist; M4 Feedramps; "F" Height Front Sight Base; Taper Pins at Front Sight Base (FSB); Parkerize under FSB; Double Heat Shield Handguards; 1.14" Diameter Receiver Extension; Staked Castle Nut; "H" Buffer. The entire TDP can't be followed 100% for a civilian carbine (no select fire capability). The TDP will specify small but important details, such as the grade of hex key bolts used to attach the gas key to the bolt carrier. It will also specify assembly steps and parts interchangeability. Just because something differs from the TDP doesn't mean it's automatically inferior, just different. The trick is to research that difference and determine if it's an improvement to the product, to the manufacturing process, or to the bottom line of a company that takes shortcuts. In some instances, it may be cost effective to buy a cheaper brand and make some inexpensive upgrades. In many cases an inferior brand will cost as much as a quality brand due to marketing hype and uninformed opinions. The trick is to know the difference. :) [/QUOTE]
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