Posted: 11/3/2007 10:08:22 AM EDT
| I have a RRA lower[I installed the LPK] with a 16" mid length RRA A4 upper. When the upper is installed and closed,the mags insert hard and won't drop free.They have to be pulled out by hand. They work fine in the lower without the upper attached. The mags are the $9.95 ones from CMMG. It looks like they are binding on the lower edge of the feed ramp. Any thoughts? TIA Jack |
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Have you taken a look up into the magwell like I suggested? With out having another upper to mate to your lower, all I can suggest is take a look to see if the breech area of the upper receiver is extended over the magwell. I would look first in this area since you say the front of your mags are wearing from removal/insertion. If true, that there was a batch of out-of-spec receivers, then contact RRA either over the phone, or here on the site in their respective Industry Partner Forum. As another member above stated, do not file on the receiver because then you may void any warranty. |
I dunno.
That's why it was a WAG! So, how tight do you have the catch? ETA: A good starting point when installing the mag catch, is to thread the catch into the release button until the threaded portion of the catch is just under flush with the buttons surface. |
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Exact same issue I had with a S&W MP15T. When I changed out various uppers and other lowers, the problem ceased. My diagnosis was the upper and lower receiver were out of alignment and this was causing the magazine to not release and drop free. I have read of other MP15T owners experiencing the same phenomonon: some sent their rifles back to S&W for service, while others did as I - mixed and matched to achieve function. Perchance do you have another upper and lower available to switch out to see if fit/alignment might be an issue? .02 - |
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Can you see any "shiny" areas on the mag catch indicating metal to metal contact that might be causing the magazine to bind? As to "judicious use of a file" - be very careful! If you have an out-of-spec upper, you're dealing with a warranty return situation, but if you start filing on the upper you will void the warranty. Please proceed cautiously. If the problem is an out-of-spec mag catch, it's an inexpensive part to replace. |
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One further observation from my experiences with the 15T and magazines not dropping free: some manufacturer's magazines would drop free without issues, while others acted as you are experiencing. Overall, CProducts generally would drop; some OKAY's worked, others not; D&H were a no go, as well as PMAGS. Labelle's, no. Adventureline, no. Center Industries, some yes others no. Perhaps try some various magazines and see if there's any difference. |
| I have had 3 RRA lowers on backorder for some time and about 2 weeks ago my FFL got them in only to have to ship them back due to a problem with out of spec lowers. It is possible if it is a newer lower it could have produced with the same batch. RRA is a solid company with great customer service, and when mistakes happen they take care of it. Give them a ring I'm sure they'll help you. Good luck |