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Author Topic: Question about AR-15 uppers  (Read 928 times)

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Offline 300grJHP

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Question about AR-15 uppers
« on: June 14, 2011, 04:03:54 PM »
Hello All,

I've recently picked up my first AR-15 rifle...it is a S&W M&P 15R in 5.45x39.  The gun is great and I'd now like to get a new caliber, but don't know exactly what all I need.

Will I be ok if I buy a complete upper, or do I need buy other stuff too?

Also, if it matters, i'd like to eventually get 223 and 450bushmaster, or 50 beowulf

Thank you,
300
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Offline SHOOTALL

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Re: Question about AR-15 uppers
« Reply #1 on: June 15, 2011, 04:06:58 AM »
You should be able to pick up a complete upper as you noted. BUT read what it comes with - sights ? flat top or A2 reciver, type gas block - flay , A2 or with rail, type handguard free float vs standard , M4 feed ramps or not etc. Make sure the upper you order has the pin size your lower has, most are small but Colt had over sized and some guns had small rear and larger front. Some suppliers have non Colt uppers to fit Colt lowers , no big deal just check . MOD 1 , Bravo, M & A and a hundred others have adds that can help see the differences. Shop for price and quality as it can vary. Also I like to stick with Military spec. parts as they should fit togather well.
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Offline Old Syko

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Re: Question about AR-15 uppers
« Reply #2 on: June 15, 2011, 04:25:12 AM »
MAGAZINES!
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Offline Bugflipper

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Re: Question about AR-15 uppers
« Reply #3 on: June 15, 2011, 11:38:02 AM »
Will also need a bolt carrier group. http://www.model1sales.com/index.cfm?fuseaction=category.display&category_ID=152

As for Old Syko's recommendation, this place carries good mags. http://www.44mag.com/
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Molon labe

Offline SHOOTALL

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Re: Question about AR-15 uppers
« Reply #4 on: June 16, 2011, 05:15:25 AM »
A complete upper should have bolt/carrier group  ;) or its not complete
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Offline Bugflipper

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Re: Question about AR-15 uppers
« Reply #5 on: June 16, 2011, 07:43:55 AM »
Quote from: SHOOTALL on June 16, 2011, 05:15:25 AM
A complete upper should have bolt/carrier group  ;) or its not complete

Listed as option at many places, as the one I linked up.
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Molon labe

Offline SHOOTALL

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Re: Question about AR-15 uppers
« Reply #6 on: June 16, 2011, 07:55:30 AM »
yes in a few they do but with out it its incomplete with out them  ;) ! But notice that the option is to have chrome or not ,same for bbl. and chamber.
BTW MOD. 1 calls them upper halfs not complete uppers .
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