Quoted: I read the comments about the built rifles on the lightfighter.net forum. Someone made the comment that 90% of the built rifles malfunction during 5 day rifles courses where up to 5,000 rounds are being fired. Here is the link to the thread:
http://lightfighter.net/groupee/forums/a/tpc/f/7206084761/m/8601034811
I had my reservations about ammo availability in the future for the 6.8mm, not to mention the fact that an upper is $1590.
I was wondering if anyone tried the Patriot Ordnance P-415 gas piston upper. It looks pretty similar to the HK-416, and it supposed have less recoil and less fouling of the chamer.
I may end up going with an upper from RRA, Bushmaster, or Colt, as they are all quality manufacturers. Although I have been using the AR-15/M-16 for over 20 years, I'm not an armorer. If just dropping an upper on a lower is just as good as having a custom shop build a rifle then I'll just save my money.
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1st point: where, in the two posts that you have made to this thread, have you stated what the purpose of this weapon is? what is the application you are trying to solve?
2nd point: you speak of wanting reliability and simplicity, comment on the cost of one particular upper, and then ask about a recently released newfangled gas piston upper which has no track record whatsoever. you point to a thread that advocates absolute simplicity in your weapon, and then ask about an upper with 5 times the moving parts of a std AR upper. there are at least 300,000 troops 7000 miles away from here using M16's, M4's, and variety of derivatives without gas piston uppers.
in summary,
see the industry forum, seek out vendors such as MSTN, ADCO, GTS, G&R, BCM. these are the types of folks who know what they are doing, will listen to what your needs are, and will give you sound advice about what kind of features and components should go into your rifle.
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again, decide what you want the weapon to do, and then start looking for the right folks to recommend componentry for your applications. otherwise, you will just end up pissing money away on the wrong stuff, and having to purchase the right stuff later.
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don't buy ANYTHING until you read the Rifles, Uppers, Lowers, Barrels, and more forum for at least a month.
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the rifles in the picture i posted are useful references.
one (the black one) is a complete Bushmaster setup (stock lower with stock FCG/trigger, stock upper, and stock "patrolman's carbine' 4150 chrome lined barrel), with front and rear BUIS, and an Aimpoint M2 CQB optic (M68 equiv). this setup is no different than what most Blackwater contractors are carrying around in the desert, and not wholly different from what most US soldiers are carrying around. it is a KISS rifle -- i've got ~3.5K rounds of Q3131A/XM193 through it and it runs absolutely perfectly. there is no "go-fast" shit hanging off of it or inside it. i have no doubts that it will go bang when i need it to. it's purpose is SHTF-style defensive engagements. if this is what you are looking for, shown is one way how to get there.
the other (the tan one) is a purpose built RECCE rifle, intended to hit things at greater distances. it has a heavier stainless steel match barrel, a free float forearm, a bipod, and a match trigger. is it any less reliable than my SHTF rifle? i don't know, so far it's release a pile of Q3131A, XM193, 69gr, 75gr, and 77gr rounds without issue. the upper was built by a respected gunsmith, and i did not expect any mickey-mouse results. i can hit golf balls at 200yds with this weapon. but the choice of optics restricts use to out past 50 yards or so; you can't go room clearing with this rifle nor would the weight be all that attractive for a long day at ready low. but if this is what you are looking for, shown is one way how to get there.
again: define what you want to do with the rifle, and that will guide helping folks on the best way to get you there. you are putting the cart before the horse: "what do you think about this upper?". this is the wrong approach, determining a solution before stating the problem.
regards,
ar-jedi