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Posted: 5/18/2001 6:56:48 PM EDT
Does anybody out there have any idea what the lifespan of an AR15 is? For example, I have a an HK USP 357SIG that's rated at 20,000 rounds by the manufacturer. I was just wondering if there was any such type of "expected" lifespan for AR's.
Link Posted: 5/18/2001 7:11:43 PM EDT
Are you talking about barrel life here..or just the life of the receiver, bolt assembly, etc? As far as barrels go, a well-oiled AR15 has a serviceable life of at least 20,000 rounds. However, don't expect the accuracy of bullet #100 to be the same as #20,000. Most competitors only put ~5,000 rounds into their barrels, before they decide (through previous experiences, or through a bad score) that their barrel is no good anymore. All in the eye of the beholder; I'm hoping my Colt barrel gives me a good 10,000 rounds of 300yard accuracy before I send it to the graveyard. Jewbroni~
Link Posted: 5/18/2001 8:31:01 PM EDT
Originally Posted By Jewbroni: As far as barrels go, a well-oiled AR15 has a serviceable life of at least 20,000 rounds. However, don't expect the accuracy of bullet Jewbroni~
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A few years back, I called Bushmaster on their 800 number and just happen to get Tom Barr(he was the president of Bushmaster at that time). He told me that they have a M16 that has had 20,000 rounds thru it, and it was still shooting very accurately.
Link Posted: 5/18/2001 8:36:55 PM EDT
i was told that military barrels have a life expectency of 50-75,000 rounds before being retired. steve
Link Posted: 5/18/2001 8:48:53 PM EDT
I believe a lot has to do with the rate of fire as well as the number of rounds fired. A barrel that will go 30,000 rds slow fire may only last 10,000 with full-auto, rapid fire. I just read an article by Wiley Clapp in Guns and Ammo where he ruined a barrel with 10,000rds.
Link Posted: 5/18/2001 9:07:27 PM EDT
[Last Edit: 5/18/2001 9:06:21 PM EDT by mattja]
Like anything else mechanical, if you can keep the heat and friction down to a low roar, it should last longer. Not taking into consideration accuracy, if you're sitting on the bench shooting one round every 10-20 seconds, cleaning lightly every 20-50 rounds, I would think the barrel would last fairly long. If you're emptying 30-round mags one after the other on full-auto, that's another story.
Link Posted: 5/18/2001 9:15:56 PM EDT
Just make the worn out barrel into a designated "shits and giggles" upper
Link Posted: 5/18/2001 10:13:26 PM EDT
Its like a car, it'll last a life time if you take care of it. clean, service, tune-ups.
Link Posted: 5/18/2001 10:31:47 PM EDT
Link Posted: 5/18/2001 10:33:51 PM EDT
Originally Posted By SILVER SURFER: Its like a car, it'll last a life time if you take care of it. clean, service, tune-ups.
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But not as expensive. Have fun! [8D]
Link Posted: 5/18/2001 10:57:19 PM EDT
Link Posted: 5/18/2001 11:10:56 PM EDT
the rifles that are issued at ARMY basic training sites are very well used items that always seem to be able to hit 300 meter targets.... the one i was issued in basic trainig in 88 was manufactured by the Turbo Hydromatic Division of GM>>> some even by Mattel (the toy company). When were they manufactured? Iknow that doesnt really speak for the barrels though....
Link Posted: 5/19/2001 6:53:37 AM EDT
Link Posted: 5/19/2001 7:02:43 AM EDT
Originally Posted By Troy: Armalite advises that lowers are good for 100,000 rounds before the fire-control pin holes become oblong enough to be out of spec. Of course, if you have standard-size parts, you can drill the holes out and use the larger Colt fire control parts. The rest of the lower should be fine, with normal maintainence of springs and such. -Troy
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Or you could drill out your worn fire-control pin holes and press in some steel bushings. Every part on an AR can be either repaired or replaced, barring some catastrophic event like getting run over by a tank.
Link Posted: 5/19/2001 8:01:48 AM EDT
Hope you've learned a lot from this post, MayDay. If anything, you've learned that your barrel will last approximately 5,000 - 100,000 rounds [;)] Which means you didn't get your question answered, right? That's because there is no definite answer. The factors that go into a barrel life are dramatic, and consist of cleaning consistency, twist/type of ammo, slow fire vs. rapid fire, chrome lining vs. none, etc. I have a Colt non-chromed line, non-HBAR (less barrel life), and I fire both slow-fire and rapid on any given 20-30rd magazine. I clean thorougly, about every 80 rounds. With this rationale, this barrel SHOULD last me around 20,000 rounds, give or take a few thousand - who knows! I'm sure I could get 50k out of it if I ONLY fired slow-fire, had chrome-lining, etc. This goes to show you that the actual characteristics of a barrel aren't nearly as important as what/when/how much/how fast you put those bullets through it. Jewbroni~
Link Posted: 5/19/2001 12:53:53 PM EDT
Longer than mine.
Link Posted: 5/19/2001 4:56:58 PM EDT
Are you talking about the receiver or the barrel? I have a factory assembled Olympic Arms CAR15 with 16 carbon steel BBL that I bought in '93. I put thru about 8,000 rounds before I experienced flame cutting of the gas port. I experienced feeding jams because the hole was letting thru too much gas into the system
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