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PostPosted: Fri Apr 12, 2013 1:51 am 
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Joined: Sun Jul 01, 2012 4:25 pm
Posts: 199
Location: HRM N.S.
Hi guys, I had a problem with my ASG STI Duty One, the slide was loose and would not always stay forward after blowing back, so it would misfire. I suspected a problem with the recoil spring, which i found was the problem. Note the mangled spring in the last picture it should be about 3/4" longer.
I searched online for info on how to strip this gun but i had no luck. So i went ahead and stripped it anyways. I thought i would share some photos and a brief discription on how to do this for anyone who may have use for this info. This is an ASG Product and they do not provide any instuctions or schematics on their guns so i hope this will be of some help to someone.
First remove rear sight, then remove the 2 screws holding the firing pin assembly.
Next cock the hammer & gently pull the slide back a bit and the firing pin assembly will tilt and drop down and out (pic1). Then gently pull the slide forward off the barrel and frame. Mine was a little tight as the spring was crushed and binding, but it installed smoothly with the new spring. Reassemble in reverse order, all should go back together with ease and no binding. I have more pics but 3 is max. for this post.
Cheers Everyone Kevin


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PostPosted: Fri Apr 12, 2013 11:59 am 
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Joined: Mon Jan 01, 2007 10:54 pm
Posts: 4920
Location: Saint John NB
You can just stretch it longer and it will work. I have had to do that on a few blowback guns

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Jonathan

Im addicted to brake fluid..........but I can stop anytime....


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PostPosted: Thu Apr 18, 2013 9:05 pm 
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Joined: Fri Feb 01, 2013 1:44 am
Posts: 118
Location: Maryland
The STI Duty One had didn't have the problem you seem to had. Mine would lock back on a full magazine. Every 3-4 shots it would lock back and catch on just the very tip of the slide lock. I don't know why it would do this. Someone told me its design flaw in the gun. But no one else seemed to have these problems. The slide on the two Duty Ones I had never was loose. It was tight and the slide did not move much at all. The blowback worked fine it was just the locking back constantly on a full mag that made it bad.

I talked to a guy on the phone from pyramyd air and he said he did not like the ASG STI Duty One and said they get alot of returns with that gun. I bet they do, two guns and they all had the same problem. He then said how nice the Witness 1911 was and I told him I already had 3 of them. I sent all three back. I was completely disgusted and just opted for a refund. I got sick and tired of traveling back and forth between fedex and my home.


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PostPosted: Fri Apr 19, 2013 9:41 am 
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Joined: Sun Jul 01, 2012 4:25 pm
Posts: 199
Location: HRM N.S.
Well i'm not surprised to hear you've had problems with some of these blowback BB guns, I suspected they would be problematic from the first time i saw them. The STI Duty One is my first purchase of one of these and i'm not impressed with having to perform "surgery" on it to get it working properly. I am pleased with it's performance now, but some Tech Support from ASG would have been nice.
I do plan on buying some more of these guns, but I think i'll go with Umarex for my next couple of purchases. Like you i hope to see some user reviews of the Crosman 1911. I hope it turns out favorably.
Cheers K.L.


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PostPosted: Sat Apr 20, 2013 1:48 am 
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Joined: Fri Feb 01, 2013 1:44 am
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Location: Maryland
I had a Umarex HPP I and it worked fine. It was blowback and it was $70. But the $120 Witness and $100 Duty One were pretty much defective pieces of junk. The HPP worked till the day I sold it, which was just 2 weeks ago. I put about 2,000 BBs through it.


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