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Posted: 12/7/2010 7:39:54 AM EDT
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Guys I have a question I hope you can answer for me.
I am interested in doing one of two things: A: purchasing a mid-length upper or B: buying an M4gery My question is do the mid-length uppers have m4 feedramps? I have a High Standard AR-15. It has standard feedramps, HBAR, and I don't think it is chrome-lined. I specifically was interested in the RRA middies. I really like the look of the middies, and after doing research, found that it is ideal for a 16" barrel. With regards to my High Standard, I like it, but when I charge it the 1st time, 50% of the time the bullet tip gets stuck on the feedramp. Note that this only happens when I charge it. I fix it by ejecting and letting the bolt slam home. When I shoot, it feeds fine. I am using Colt mags. I just want my gun to be as reliable as possible. I may just buy a 6920.... it is stupid, but I am drawn to the Colt stamp and the LEO & Military marking.... Thanks for your help! |
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Like M4 carbines, some midlength have M4 ramps, some don't.
If you want a midlength, I would suggest you look at SDI or BCM (both will have M4 ramps and chrome lined bores\chambers) over RRA. RRA's do not have M4 ramps and if you decide to go with RRA, make sure it's chrome lined (not all are) and not an HBAR (Some RRA's are) The midlength gas system does offer a number of small advantages over the carbine length gas system but in the end, none of those advantages are a really that significant (IMO - YMMV). So IMO while a middy is better over all, a well built carbine is just fine so if you want a pony or some other carbine then go ahead and get one. |
| In my experience with RRA, they usually have the m4 feedramps, albeit hand dremmeled in. I have not seen this cause any problems, but some people don't like the fact that the feedramps are bare metal. My personal build is a mid-length, and I can't tell any difference shooting it compared to a carbine. Time will tell if the wear pattern is any different. For the prices I have seen RRA going for, I would personally look at Spikes Tactical, or BCM if their uppers are still on sale. |
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'this only happens when I charge it'
Do you lock a mag with the bolt open and release it to load with the bolt catch? You cannot ride the charging handle to load easy - that's a jam almost for sure with the Spitzer-pointed bullets. CMMG has the upper you want - check them out before deciding. You can't go wrong with a new 6920, but you're probably still going to want a middy upper. I think I'd get the upper rather than blow $1200 on another carbine-length gas system. And you could sell the RRA upper, you know. |
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Quoted:
Like M4 carbines, some midlength have M4 ramps, some don't. RRA's do not have M4 ramps. I wish you people would stop furthering this ridiculous misinformation. I have yet to see an RRA WITHOUT M4 ramps. All 3 of the ones I've had - and the mid-length I have now - had/have M4 feed ramps. The fact they're left in the white (polished silver) on some rifles is a plus IMO, since that makes a slicker ramp than one that is phosphated or parkerized. . . |
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Quoted:
'this only happens when I charge it' Do you lock a mag with the bolt open and release it to load with the bolt catch? You cannot ride the charging handle to load easy - that's a jam almost for sure with the Spitzer-pointed bullets. CMMG has the upper you want - check them out before deciding. You can't go wrong with a new 6920, but you're probably still going to want a middy upper. I think I'd get the upper rather than blow $1200 on another carbine-length gas system. And you could sell the RRA upper, you know. What if you wanted to charge it quietly? Usually, no I do not use the bolt release to load it unless I am changing mags.... Am I doing it wrong? What does the .mil teach? |
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Quoted:
Quoted:
Like M4 carbines, some midlength have M4 ramps, some don't. RRA's do not have M4 ramps. I wish you people would stop furthering this ridiculous misinformation. I have yet to see an RRA WITHOUT M4 ramps. All 3 of the ones I've had - and the mid-length I have now - had/have M4 feed ramps. The fact they're left in the white (polished silver) on some rifles is a plus IMO, since that makes a slicker ramp than one that is phosphated or parkerized. . . In response to your statement in blue, see your statement in red. |
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The quietest way I know to charge a gun is to drop a round in the chamber and then slowly ride the handle until the bolt closes and then mash on the forward assist. Then press check to ensure the bolt has a hold of the round. Then insert the mag.
Why do u need to be quiet? |
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Quoted:
The quietest way I know to charge a gun is to drop a round in the chamber and then slowly ride the handle until the bolt closes and then mash on the forward assist. Then press check to ensure the bolt has a hold of the round. Then insert the mag. Why do u need to be quiet? I don't know lol..... |
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