Last year I got into building AR-15 rifles. This year I am working on an SBR line after ATF Form 1 approval.
As a training tool the LM4 and LM4C are great ways to practice. So I decided to take a base LM4C, strip it to the lower and make a custom GBB rifle after some harsh lesions from trying the same with a LM4. Parts from KWA, along with real steal modifications from Magpul, was enough to garner some experience to tackle a full blown retrofit. With only the tools used to built the AR, and a file from Home Depot, a rough effort was refined to make an acceptable rifle. It is not something I would take to Shotshow and show off, but it closely matches my real steal AR.
One of the issues I have had is the magazine dropping out of the magwell. I think the problem is the magazine release, which does have some wobble on the perpendicular to the pin. I include some photos. Is there a magazine release that is not stock that provides real steal retention of the magazine? I know this is a training tool and enjoy it much in its current configuration, but would like some help to solve this problem.
Edited by Michael Rebar, 13 February 2014 - 10:05 AM.