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Posted: 5/21/2017 9:18:34 AM EDT
[#1]
What mags and will the mag seat fine with the bolt locked back?
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Posted: 5/21/2017 10:11:13 AM EDT
[#2]
ASC 32 round mags.
No, even with the BCG completely removed the mags are hard to seat. It's hitting on the upper. The BCP lower comes with a tension screw that I haven't installed, but I still don't know it that'll give enough upper to lower separation to get the mags to lock easily. |
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Posted: 5/21/2017 10:50:28 AM EDT
[#3]
Quote HistoryQuoted:
ASC 32 round mags. No, even with the BCG completely removed the mags are hard to seat. It's hitting on the upper. The BCP lower comes with a tension screw that I haven't installed, but I still don't know it that'll give enough upper to lower separation to get the mags to lock easily. Or is the mag making contact on the edges of the upper ?? If this is the case, you'll need to widen the area, of reduce the mags width. . |
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Posted: 5/21/2017 12:40:30 PM EDT
[#4]
Here's where it's contacting the upper, on the little lips that stick out on both sides below the ejection port.
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Posted: 5/21/2017 12:47:56 PM EDT
[#5]
This is a classic issue with all colt style metal mags.
They are "under manufactured", so you need to do some work with a rasp kit on them. Heres instructions on how to do that Click here Ive done this to about 7 mags, they all work perfectly now. Try to avoid c product or asc mags from now on, they over coat them with powder and paint. Metalforms are what ive found to be best. Go to my AR build here - Click for my AR |
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Posted: 5/21/2017 12:58:57 PM EDT
[#6]
I'd try a metal form mag. I have had issues with ACS mags. PSA has metalform mags cheap
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Posted: 5/21/2017 9:09:03 PM EDT
[#7]
Quote HistoryQuoted:
This is a classic issue with |
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Posted: 5/21/2017 10:05:56 PM EDT
[#8]
Quote HistoryQuoted:
I'd try a metal form mag. I have had issues with ACS mags. PSA has metalform mags cheap |
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Posted: 5/21/2017 11:09:36 PM EDT
[#9]
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Posted: 5/22/2017 8:50:36 AM EDT
[#10]
I had the same problem seating ASC magazines with the bolt closed. I also had problems with the feed lips hitting on the bolt.
After a couple of minutes with a file and my calipers, the feed lips were filed down and they would seat on a closed bolt. They also didn't hit the bolt anymore. |
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Posted: 5/23/2017 1:40:51 AM EDT
[#11]
Quote HistoryQuoted:
I had the same problem seating ASC magazines with the bolt closed. I also had problems with the feed lips hitting on the bolt. After a couple of minutes with a file and my calipers, the feed lips were filed down and they would seat on a closed bolt. They also didn't hit the bolt anymore. |
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Posted: 5/23/2017 5:55:20 AM EDT
[#12]
Man, my BCP lower and Model 1 upper worked good with the ASCs. I did have an issue with the CMMG bolt hitting the powdercoat finish they used on the early ones, my last batch was gtg for the beginning. If ya off load the ASCs, let me know, I could use more.
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Posted: 5/23/2017 7:01:02 PM EDT
[#13]
No issues with ASC here. What I find hilarious is the 9mm Tavor guys praise their IWI stamped mags as the greatest thing ever. Except for the fact that they are cost about 30$ a pop and have a different logo on the floor plate. They are contracted by ASC and the exact same mags follower ect.
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Posted: 5/23/2017 7:59:16 PM EDT
[#14]
I have a few ASC mags
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Posted: 5/26/2017 11:42:39 PM EDT
[#15]
I have a BCP lower too and with ASC mags I have the same problem. Metalform and Brownells (also metalform) mags work fine.
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