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本帖最后由 happyfrog 于 2015-12-3 08:36 编辑
鉴于大家对AK和AR的热情，特贡献这个耐操性报告。大家自己读去吧，链接在下边：AK的报告
https://www.ar15.com/forums/t_4_ ... Page_6_.html&page=1
AR的报告：
https://www.ar15.com/forums/t_3_ ... d_on_our_range.html
他们还有手枪的使用报告,很有意思，感兴趣的也可以参考：http://www.ar15.com/forums/t_5_4 ... __observations.html
以下是几个总结：
"Every single stamped receiver has suffered from a cracked trunion. This includes Saiga, Arsenal (Bulgarian), Norinco (Chinese), Arsenal (Russian stamped), WASR, Hungarian, Polish (vintage kits), Yugo (vintage and PAP-series) and new Polish (from Royal Tiger imports). "
"US (Century), Bulgarian and Chinese milled receivers have yet to fail. "
" We have yet to shoot out a factory WASR barrel."
"We have WASR's on the line that have last OVER two and half years and the barrels are NOT shot out and they continue to run. We installed new bolts to bring headspace back up but they keep running. "
"This may sound crazy but it's fair to say that they finally suffer a catastrophic failure (cracked trunion) at 80,000-100,000 rounds. Also, we have WASR's that have suffered a catastrophic failure and we just pull out the old trunion and barrel, grab one from a parts kit, re-rivet, re-barrel and get them up and running. "
"The one thing I can say about the AK's is that they hold up MUCH BETTER than the RPD's. I thought for sure that RPD's would last so much longer because of the milled receivers but the receivers only last about half the life (if that) of a Romanian WASR."
"We only used the N-PAP's on the range and they failed miserably in a short amount of time. It appears, in my opinion, that the receivers were not heat-treated correctly and they cracked. "
"After the other N-PAP's had issues we pulled them all. I am in no way saying that all Serbian weapons are prone to this or the older Yugos are of the same quality. I just know what happened to our rifles and we can't risk the liability of a catastrophic failure on the range. I know Century imports them and don't cast any fault on them either because all of the WASR's we get from them have all been home-run's. "
"We put three of the original milled C39's on the line when they first came out and they have all been pulled because the barrels keyhole."
"I know some folks REALLY think that "their" brand of lubes and cleaners are the best but I can tell you that, in OUR experience, they have all worked about the same."
"I can tell you from our experience that an AK will outlast an AR on our range. We use what I feel are high quality bolts (Daniel Defense and LMT) and they have about an 8-month life span. The bolts will start skipping over rounds and fail to feed when they are close to the end. We still get bolts that will shear lugs and run (not that we purposely do that) but at the end of the shift when weapons get inspected, they will see missing lugs and pull the weapon from the line. "
- Some of our M4's have well over 200,000 rounds down range. Barrels have been replaced, gas tubes have been replaced, BCG's have been replaced but what sets it apart from the AK47's is that upper and lower receivers continue to function. AK's get to about the 100,000+ round count and rails on the receiver will start to crack. It's an easy fix with tig welding but they crack. We have yet to lose an upper or lower receiver from cracking.
- We get about 20,000 rounds out of bolts before we start experiencing issues. The headspace gauge will start getting closing on NO-GO but not close on field. We will lose a lug on the bolt. The bolt will start skipping over rounds in the magazine and fail to insert a round. We use LMT and Daniel Defense bolts and some will actually go longer but at about 20,000 rounds is when we will start to see issues appear.
- Gas tubes will erode away at the FSB after 12+ months
- Charging handles will "stretch" allowing the locking lever and spring to fly out
- Hammer pins and disconnectors on the 8.5" full-auto's will break after approximately 4,000-5,000 rounds regardless of the buffer weight
- We have yet to lose a single flash hider as compared to muzzle brakes on an AK-47. The muzzle brakes will literally split in half, looking a like bird with his beak open and go flying down range.
- We no longer use ANY piston conversions or factory pistons guns with the exception of the HK-416 "knock-off" TDI upper. I purchased a FACTORY brand-new MR556 and it started keyholing after only 10,000 rounds. I was SO pissed because I spent all that money on the gun and it couldn't last 10,000 rounds. I had barrels from before we even opened the range with 1,000's of rounds on them from J&T Distributing (chrome-lined) that didn't keyhole well into the 80,000-100,000 range. I don't know who makes or made the J&T barrels but I was so pissed that actually wasted the money on a MR556 and that's all I got from it. I purchased two of the 14.5" TDI knock-offs approximately 6-8 weeks ago and they have been on the line daily with ZERO issues. I only purchased them because people will come in specifically request the "416" and even they've never handled a weapon their entire lives, they KNOW that the top half isn't the "416 like in COD/MW".
- USGI mags have outlasted all of the other brands. We use UGSI (Brownell's with tan follower) and on a mag for mag basis, they have outlasted Pmags and a few of the other mags that we get from mfg'ers with new weapons. We don't have to worry about various generations with different weapons like the MR556, SCAR, F2000, Tavor or a couple of others that use AR15/M4 magazines.
- Cleaning bolts and carriers is such a pain in the ass as compared to our AK's, G36's, SCAR's, ACR's and most other platforms. We throw them in the ultrasonic cleaner filled with Simple Green (EPA, OSHA and disposal concerns for us) and they never full remove the carbon from the bolts. The armorers spend so much time cleaning them and keeping all the parts together as compared to most other platforms.
- The only piston system to last on the range so far is the HK416 and TD415 system. Ever other systems we have tried has failed in one way or another. I won't say who's broke or how they broke so PLEASE don't ask. Each mfg has their own system for cleaning intervals and we may not follow their way. We have a way of cleaning and keeping records that suits our needs because of so much use.
- There is company that has an AR system that has some "parts don't need lubrication" and that failed before the end of the first day. I don't think some mfg's understand that people REALLY use their weapons and when you're rocking full-auto all day they NEED lubrication. My armorers and RSO's were laughing when it seized it up because we knew there was NO way it would last on our range.
- The parts that we see break more often are the bolt cam, bolt lugs shearing off, firing pins and gas keys shearing off the bolt carrier.
*EDIT* Forgot to add this gem, so much for another bullshit myth:
Q: " Ron, do you guys have any piston AR's in your stable?"
A: "We had plenty of them and EVERY single one of them has had an issue. Pistons broke, barrels keyholed, cam pins sheared and springs snapped. "
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发表于 2015-12-3 08:34
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发表于 2015-12-3 09:02
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