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Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles.

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  #1  
Old 11-11-2010, 9:32 PM
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Default What can break on an AR?

Planning on getting a complete DD or Noveske AR. These are top tier rifles, so I am asking...What can break and what should I get a couple extra of? I don't mean mags either
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Old 11-11-2010, 9:39 PM
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Some extras I keep: Extractor and spring, firing pin retainer pin (x2), general spring kit.
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Old 11-11-2010, 9:49 PM
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When I take an AR out to the range, I usually keep a bottle of Mobil 1 synthetic and an AK in my emergency tool kit. If I'm going out on a hike, I'll bring an oil bottle with Mobil 1, a cleaning rod (in case of stuck casing), and a friend with an AK.
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Old 11-11-2010, 9:49 PM
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I like having a spare bolt group and firing pin. They fit conveniently with the MIAD FP/Bolt Core.
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Old 11-11-2010, 10:26 PM
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Nothing. If it breaks I shoot something else and take it home to the shop and fix it. My range bags weigh enough as it is.
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Old 11-11-2010, 10:54 PM
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Spring/maintenance kit, firing pin, bolt, BCG small parts including extractor, etc etc..
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Old 11-11-2010, 10:54 PM
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The bolt and barrel. There is one SOPMOD PDF file shows the failed parts of M4. The bolt breaks where the cam pin is. The gas will erode barrel eventually. That's after 5000-10000 rounds.
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Old 11-11-2010, 11:18 PM
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If you've got a few thousand rounds through it, probably a new extractor spring and possibly an extractor. Maybe a complete bolt incase you get a broken lug. I'd also take a long cleaning rod incase you get a stuck case. And obviously lube. Oh and extra mags because mags wear out.
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Old 11-11-2010, 11:28 PM
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You wallet, maybe your marriage?
Black guns are addicting. . .
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Old 11-11-2010, 11:41 PM
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Quote:
Originally Posted by kAnJii View Post
Planning on getting a complete DD or Noveske AR. These are top tier rifles, so I am asking...What can break and what should I get a couple extra of? I don't mean mags either
Buy extra uppers
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Old 11-12-2010, 12:26 AM
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Just buy 2, then you have spare EVERYTHING
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Old 11-12-2010, 1:07 AM
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Quote:
Originally Posted by BAGunner View Post
The bolt and barrel. There is one SOPMOD PDF file shows the failed parts of M4. The bolt breaks where the cam pin is. The gas will erode barrel eventually. That's after 5000-10000 rounds.
That is only when troops are blazing away on full auto and treating their M4s like LMGs. A well-made chrome lined barrel on a semi auto AR will last much much longer than 5,000-10,000 rounds.
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Old 11-12-2010, 1:20 AM
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Bolt, disconnector, springs.
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Old 11-12-2010, 1:47 AM
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bolt, gas rings, extractor, disconnector, firing pin, cam pin, springs (extractor,tirgger,hammer,buffer) but thats not till your rifle has seen a few miles.
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Old 11-12-2010, 3:24 AM
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all of the above.

have a backup rifle.
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Old 11-12-2010, 4:55 AM
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everything and anything. just like any other weapon
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  #17  
Old 11-12-2010, 4:57 AM
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I lost a front sight pin on my ChiCom AK.

Thanx, Russ
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Old 11-12-2010, 5:11 AM
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Just do a NY reload. (weapons transition) lol.

The weak part of the AR is the mags, extractor claw, claw spring, extractor insert, insert spring, firing pin, firing pin retaining pin and bolt. I have seen all of these fail or break at some point in my life. The good thing is that these are all tiny and can probably be tucked away on the gun somewhere in some little compartment?
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  #19  
Old 11-12-2010, 6:42 AM
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Even if its a top tier rifle like DD and Noveske? All these suggestions are needed as extra parts?
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Old 11-12-2010, 7:37 AM
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Quote:
Originally Posted by kAnJii View Post
Even if its a top tier rifle like DD and Noveske? All these suggestions are needed as extra parts?
No. Only some of the replies you got are worth the time to read.
barrel after 5K...give me a break...

It is generally accepted that if a part last 1K rounds it will have a higher chance to last past 10K. At 10K its best to start a replacement schedule. By 20K you should have replaced all the internals, and then also replace the Bolt.

What extra parts you need is an extra LPK and complete Bolt. The only time you need to worry about buffers and buffer springs is when you buy cheap china junk. Same for the FA assembly and door assembly.

What you want to carry with you is the complete bolt and all the pins and springs from the LPK. The hammer, trigger, disconnecter and firing pin rarely break.

magazines are the weak point of an AR.
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Old 11-12-2010, 7:51 AM
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Quote:
Originally Posted by kAnJii View Post
Planning on getting a complete DD or Noveske AR. These are top tier rifles, so I am asking...What can break and what should I get a couple extra of? I don't mean mags either

The small parts in the bolt/carrier would be the first things that can break or get lost. Extractor, extractor spring (with blue insert), gas seal rings, firing pin retainer. You might also want a spare extractor retaining pin in case you lose it in the field while changing the extractor spring.

I have seen a 1 hammer or trigger spring break (I can't remember which one), but that was from a flaw in the wire, and not from wear or abuse. I think there are 3 springs in the lower triger group assembly. The small coil type would probably wear out first. You may also want to get a spare selector detent and spring in case you lose those while changing one of the trigger group springs. A spare trigger or hammer cross pin would be good to have: I have seen people lose those in the field (in the Army).

If you get some sare trigger and hammer spring, store/carry them carfully. If they get squashed, they would be almost useless. I use to carry my spare parts in a small plastic Army NBC decontamination kit.
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Last edited by Marlin Hunter; 11-12-2010 at 7:54 AM..
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Old 11-12-2010, 8:48 AM
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Just carry a complete bolt and GI cleaning kit.
Spare firing pin retainer is also good.
BTW, use McFarland gas ring on your bolts. They last.
If you have extractor issues just swap in your bolt. Easy peasy.
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Old 11-12-2010, 9:05 AM
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Every single part of the gun is capable of breaking. Hell, I've even seen people here posting about their muzzle breaks. I can only assume that once they get their muzzles fixed, they install muzzle brakes on them to help pevent their muzzles from breaking again.
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Old 11-12-2010, 9:23 AM
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Quote:
Originally Posted by CSACANNONEER View Post
Every single part of the gun is capable of breaking. Hell, I've even seen people here posting about their muzzle breaks. I can only assume that once they get their muzzles fixed, they install muzzle brakes on them to help pevent their muzzles from breaking again.


Magazines will eventually wear out, I personally haven't had any parts break or wear out on me, although I did almost lose the bolt cam pin in the sand during basic training, that was a scary 5 minutes for sure. I also have lost a feed pawl spring out of a SAW, but thats a horse of another color.
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Old 11-12-2010, 9:30 AM
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The ex-CAG guy, Mike Pannone, wrote an excellent article on how to keep your rifle/carbine up and running here. Take a look at it when you have a chance:

http://www.defensereview.com/m4m4a1-...yre-our-fault/
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Old 11-12-2010, 10:35 AM
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Default Think about what is under great stress

Think about which parts see great stress then think about what broken part would disable your gun. I would think that a compete bolt carrier group would be an excellent starting point. The BCG is small and light and contains the majority of parts that are highly stressed and could disable the gun. After the BCG I would look at the trigger group. I got a Geissele trigger recently and Geissele suggests that the life of the hammer spring is 10k - 12k operations. I have to assume that Geissele uses the best springs that one can find so if their hammer spring is good for 12,000 operations then one would think that some others may not last even that long. A hammer with spring attached would seem like a good idea, or better still one of the trigger groups that has all the parts already attached. The Rock River and Geissele come with all the springs, disconnector, etc. already assembled to replacing the entire trigger group would only take a minute or two. There are even compete drop in triggers, although they are probably only slightly easier to replace than a Rock River or a Geissele that has already been adjusted (or the SSA).

As to barrels wearing out in 5,000 shots, that is true if you are talking about target shooting, but if you are talking about being able to hit a 12" target at 25 yards, that barrel will last almost indefinitely.

With the minimal cost of a lower and stock and lower parts kit I don't really see the point of extra uppers. For a couple of hundred more dollars over the cost of a complete upper you can finish off the rifle (assuming you aren't anal like me and insist on a Geissele trigger and target stock, and monopod, etc.)

If you are using a scope of red dot (EOTech, etc.) then a spare one of those would probably be in order (keep in mind that a spare sight will be of little use if it isn't sighted in).
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Old 11-12-2010, 10:41 AM
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why not get something like this.?

http://palmettostatearmory.com/1356.php
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Old 11-12-2010, 3:33 PM
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Quote:
Originally Posted by CSACANNONEER View Post
Every single part of the gun is capable of breaking. Hell, I've even seen people here posting about their muzzle breaks. I can only assume that once they get their muzzles fixed, they install muzzle brakes on them to help pevent their muzzles from breaking again.
That actually took me a second.

+1 to you sir!

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Old 11-12-2010, 3:55 PM
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anything, buy more than 2 AR's.
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