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Posted: 6/22/2013 8:45:43 AM EDT
Well so I machined a few lowers and used the jig I got from the maker of the lowers. At the front of the trigger compartment all three lowers ended up having a small hole that breeches into the drilled hole form the mag release. I measured the jig and it appears the jig was machined incorrectly. Everything else lines up fine, and when I test fitted it everything went in fine and functions the way it should. The hole gets sealed by the mag release and it doesn't seem like anything could her in there. Should I contact the company that made the lowers and jig and complain that the top plate of the jig was machined wrong or should I just try and use these as they are?
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It doesn't look like there is anything wrong with the jig. Do you have a blue print to verify dimensions? Have you tried to put a mag release button in the mag release hole?
Is the wall thickness in that blow out the same as up top by the slot for the mag catch? Can you post a couple more pics from different angles? |
Yeah, I put a mag release in and it fits fine. I checked against the blueprints and the top plate of the jig had the trigger compartment about .005 too long in the front. I guess I never realized how tight the tolerances were at the front, because nothing else about them are really that tight. When test fitted everything seems to function fine. I guess I just get worried that something could happen while firing but I don't know what problems it could really cause other than the mag release getting dirty. Unfortunately my calipers aren't long enough to check that area to see if its the same thickness all the way up. |
| Unfortunately I left the jig at my buddies house who has the mill. As soon as I can get it back from him I'll get a picture. I kept checking to make sure the bit was ruining true and that there weren't any issues with the chuck. The second one I even backed off away from the top plate on the jig just to see and viola same hole. |
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