AR Sponsor
Posted: 1/22/2011 6:53:30 PM EDT
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Hey guys, forgive my ignorance, but I recently traded my former AR-15 for a different one.
Since then, I have been looking at the markings on the firearm to determine the manufacturer, etc. I recently thought my AR to be what is considered an M4gery untill I saw that it did not posses the barrel profile designed to fit the M203 grenade launcher. However... my upper reciever has the marking "M4" right under the picatinny rail before the start of the handguard. I was told it is indeed an M4 upper reciever by the person I traded with, it also has the M4 feed ramps. It is an Eagle Arms Armalite M15A2 lower, with a Colt "M4" upper. Can anyone tell me what my AR is? Is it just an M4gery with a swapped out barrel, thats my guess? Is it just considered a standard 16" Carbine? Thank you for helping me find my AR's identity! Will post more pics if needed! 
http://i839.photobucket.com/albums/zz313/dstyer90/AR-15/M15.jpg |
| Come on man! You can take the handguards off! You might need a third set of hands, worst case scenario. From the one picture, your gun has standard CAR handguards. Pull back hard on the ring in front of the reciever that the handguards sit in, and remove them. Reverse to re-install. Looks like your gun has a rail installed on the lower handguard, so you wouldn't put that on top when you re-install. Shouldn't be an issue. |
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Quoted:
Come on man! You can take the handguards off! You might need a third set of hands, worst case scenario. From the one picture, your gun has standard CAR handguards. Pull back hard on the ring in front of the reciever that the handguards sit in, and remove them. Reverse to re-install. Looks like your gun has a rail installed on the lower handguard, so you wouldn't put that on top when you re-install. Shouldn't be an issue. Aww but I wanted the vertical grip on top of the barrel!!!  lol
Yeah, you were right, very easy to take off. Unfortunatly, no marking underneath the handguards. |
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Quoted:
The only markings on the upper are M4 and C AF. I would take the handguard off but I sure as hell don't feel confident enough to put it back on correctly... 
The barrel just says (from the handguard up) C MP 5.56 NATO 1/9 HBAR. And correct, no flash hider. It's a Colt upper with a Eagle Arms lower. |
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Sounds like you have a high quality carbine there. With the 1:9 barrel, you would use 55 gr to 69 gr ammo, nothing heavier. Lack of a bayonet lug only means the carbine is a few grams lighter. Nobody uses a bayonet with a carbine, not even the Army. If it were mine, I would send the upper to ADCO and have the barrel trimmed back and an A2 flash hider permanently attached to make it 16" overall. Thanks to the cell phone pics (that should be outlawed), I can't tell what that lump is at the rear of the upper receiver - is it a cut-up part of a carry handle or a removable iron sight?
I probably would add the short EOtech XPS red dot holographic sight and call that one good. Don't forget the inviolable law of the forum; you must spend at least an amount equal to the cost/value of the weapon on sights, lights, rails and other doodads/modifications. |
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Yeah the upper reciever says M4 but the barrel isnt the typical barrel you see on M4gerys thats why I was asking, no marking besides what I posted earlier.
And thanks, I think its a nice carbine too. I do plan to spend a good amount of $ on a quality optic down the road, might buy a cheap brownells holographic in the mean time til I save up enough. Besides that Ill pass on lights and lasers, for now anyway. What would be the point in trimming down the barrel to add a 1.5inch fixed flash hider? Thats just making it lose muzzel velocity for the sole reason of having a flash hider. Barrel wouldn't be any shorter. And Yes the "lump" on the upper reciever is a removable peep-style iron sight. |
| You have a post ban Colt upper with a 1/9 HBAR barrel thats ramped and chromelined you could send it to ADCO and cut it down to 14.5 with extended hider or 14.7 with normal hider and then reprofile the barrel to M4 standard.The upper is an M4 Colt upper.As far as loss of velocity 95% of armed engagements take place well under 50 yds so shortening the barrel is no handicap. |
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Thanks for the info.
I understand the loss in velocity isnt that big of a deal, but what really is the point in cutting it down to 14.7 or 14.5 and adding a flash hider to take it back to 16? I know 16 is the shortest legal limit without filing out SBR paperwork, but what does a 14.5 with a flash hider offer that a 16 without a flash hider doesnt? Just the fact that it has a flash hider on it? |
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Quoted: Thanks for the info. I understand the loss in velocity isnt that big of a deal, but what really is the point in cutting it down to 14.7 or 14.5 and adding a flash hider to take it back to 16? I know 16 is the shortest legal limit without filing out SBR paperwork, but what does a 14.5 with a flash hider offer that a 16 without a flash hider doesnt? Just the fact that it has a flash hider on it? The point is the same pointhider for any shorter barrel... it's shorter, and therfore lighter, and more compact. It's up to you to decide if it's worth it. A flash hider, ummm... hides the flash. It also tends to direct concussion forward, which anyone firing next you appreciates. |
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Quoted:
Thanks for the info. I understand the loss in velocity isnt that big of a deal, but what really is the point in cutting it down to 14.7 or 14.5 and adding a flash hider to take it back to 16? I know 16 is the shortest legal limit without filing out SBR paperwork, but what does a 14.5 with a flash hider offer that a 16 without a flash hider doesnt? Just the fact that it has a flash hider on it? Looks mostly, but you do reduce the gas pressure a little. |
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