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Posted: 10/17/2015 10:31:28 PM EDT
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I ordered the 9mm 16" kit from PSA. I knew going in that the kit includes a slick side-upper, and a non-ramped bolt. But, for $420.00 to my door, I thought I'd give it a try. I've read again, and again that the non-ramped bolts will smack the heck out of your hammerer, and this force will go directly to the hammer pin, subsequently causing your hammer pin to egg-out the pin holes in your receiver.
Are these reports of "egg hole" damage real, or just myth? I wanted to find out, and I have a few extra lowers looking for work. I installed the PSA 9mm kit kit on a $29.00 lower (80% Tactical machine). Basically, I was willing to risk a $29.00 TM Lower to find out if the "egg hole" stories are real, or just something that gets repeated on the internet. The problems I encountered were basically jams, which I traced back to the PSA 9mm magazine block. I noticed that the magazine block slips right into the lower, and is held in place by magazine catch bar, and to a lesser extent by the bolt catch. Again, the problem seems to be that the magazine block moves up & down. I moved the PSA 9mm upper to my dedicated 9mm lowers, and it runs okay. I tried the PSA magazine block in a mix of 80% lowers, and store bought lowers from RRA, PSA, Colt, etc., and the PSA Mag block fits loose in every lower. I also used both anodized and painted lowers. It's just loose in everything. I contacted PSA, and they sent me a UPS return label, and I returned the mag block. PSA sent it back to me a couple of weeks later, without a note, invoice, letter or any explanation. NO, it wasn't fixed or replaced. I complained again, and a guy by the name of "Frank" sent me an email with instructions to put lots of lube on the magazine block, and pound it into the lower with a rubber hammer. Evidently, they don't actually read the emails. Thanks in advance for any constructive feedback and suggestions. |
| make sure the screws that hold the adapter are tight for one thing. Also make sure the mag catch moves freely up and down. I assume you have the top insert mag adapter. I have two and both function just fine. Its possible your lower isnt in spec as well or your mag catch may need to be replaced or the spring inside. I used all new parts when i built my 9 mm rifle. As for trigger pins I use stainless steel pins which are harder than standard pins. Also are you using a 9mm buffer or a standard buffer. if egging worries you get a KNS pin set. |
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I also have on of their 9mm rifle kits that I assembled on an Anderson lower. The mag block slide into the lower easily and while I can feel a little movement when I push on it with my fingers, I have not had one problem in 600 rounds through it so far. I did have the bolt ramped by the Mad Machinist - good deal, fast turn around. Maybe its a magazine issue? What type of magazines are you using? I ordered 3 of the PSA 9mm mags and it all I've used. |
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