Posted: 1/26/2012 8:42:22 AM EDT
| I have watched a bunch of the tactical carbine class videos and i notice the instructors telling their students to extend their left arm and hold the rifle toward the end. The AR I have is the Colt LE6940 which has the one piece upper with the rail built in. This does not extend the length of what I have seen in these videos. Is the point really to extend your arm or grip it where you feel you have the best control based on the rifle. Hopefully this makes sense and thanks. |
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Ok, misunderstood your question.
An excellent option for you would be the Omega X rail from Daniel Defense. https://danieldefense.com/rail-systems/omega-x-rail.html It will fit on your carbine length rifle without having to take the front site off and it will extend the rail for you. You'll have a longer, free floating, rail made by the best in the business. ETA: Nevermind, just realized that the Colt 6940 has the silly monolithic upper thing. I don't know if there's a rail extension available for that or not. Ask around in the AR Discussions forum. |
| Length of pull can be adjusted by extending the stock. While technically you are not getting your hand nearer the muzzle end of the weapon, you are changing the actual pivot point and extending the arm does give more control. I do this on my 10.5" SBR carbine length and if I extend the stock all the way out giving my arm more extension, the rifle dynamics change enough that I gain more transitional control than if the stock is collapsed. Now if you are very tall with Orangutan type arms it might not make a difference. At the least give it a try. If it works great, if not no loss. What most find to be the problem is that they want to get further out on standard forend and start burning themselves on the FSP. The next progression that they generally take is a longer rail set up. |
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Quoted:
Getting the 6940 was a mistake for this reason. I'd recommend disassembling the upper and building one with a longer rail. Reuse your BCG and barrel. Buy a new rail like a KAC URX III, a stripped upper, and a low profile gas block and you'll be in good shape. Or just not spend the $500 or so extra and learn to shoot the one that he has. It's not OPTIMAL (though that is arguable), but I'm sure he can learn to shoot it just fine. Many, many people have killed a lot of bad guys with 7" rails or even stock handguards. |
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Or just not spend the $500 or so extra and learn to shoot the one that he has. It's not OPTIMAL (though that is arguable), but I'm sure he can learn to shoot it just fine. Many, many people have killed a lot of bad guys with 7" rails or even stock handguards. Heretic! Are you actually advising him NOT to fix a software problem with a hardware solution. ;) 
Seriously, bravo! 
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Advice on taking your rifle apart and rebuilding it is just horrible.
Do not do that. You have a great rifle, keep it, use it, train with what you have. The exaggerated stances you see with the arm out are good, they come out of many of the 3 gun shooters and are proven to help control the rifle and help move the rifle well. See the magpul videos. Simple do what you can with your rifle. Do not extend the stock to make the rifle longer, that will do more harm to your cheek weld, sight picture and play hell with your focal length if you have a magnified optic. The carbine length rail is the most common rail out there, it wont be the most common at the 3 gun events, or what is popular with "tyre 1" guys however. You may find (like me, I'm to short) that you just don't have the reach to look like the guy on the video. So don't try. Do try the practice being taught, you may learn a better way, you many not (keep this in mind with all training), use what works for you. |
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Why shouldn't the guy build the rifle he wants? It's a Colt, he can probably resell the thing without taking much of a loss and then buy the rifle that fits his (perceived or real) needs.
I rebuilt an A2 into a flat top 3-gun rifle. I also sold a carbine and bought a midlength. Did it after I decided that the original guns weren't for me. Couldn't be happier with either decision. |
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Why shouldn't the guy build the rifle he wants? It's a Colt, he can probably resell the thing without taking much of a loss and then buy the rifle that fits his (perceived or real) needs. I rebuilt an A2 into a flat top 3-gun rifle. I also sold a carbine and bought a midlength. Did it after I decided that the original guns weren't for me. Couldn't be happier with either decision. While he is certainly free to build or buy what he wants, he is asking about doing so to conform with training seen in a video with questionable benefits. Since he was asking for advise, mine is to get trained before altering equipment. YMMV and so may his. 
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Depending on what type of shooting you do and what optic you use extending the stock means little if you are using red dots, not as much with irons, but with magnification and eye relief then you might have issues. Cheek weld is a non factor. Again I can get just about the same reach with a carbine length as with a non FSB tube. I am not a competition shooter but there is no doubt that with more extension your recoil management and transition speeds with accuracy increases. This has practical applications for competition and critical use types.
Here are some various set ups. Notice the bottom photo is a carbine length with stock fully extended. Click photos to see video. Without AFG - VTAC Extreme rail 
_______________ With AFG - Troy Extreme rail 
_______________ Carbine Length with AFG - Full Auto 60 rounds 
_______________ VTAC 1/2 &1/2 
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