I took a stock LE6920 and sent the barrel to ADCO to have it cut to 10.3" and they enlarged the gas port to Crane spec while they were at it (for no additional charge, thanks guys!).
I took out the H buffer and replaced it with a Colt H2 buffer. Left the stock recoil spring.
I switched the trigger to a Geisselle (I can't remember which one it is, but it's the semi version of the NSN one that was approved by Crane).
Instead of reinstalling the A2 flash hider, I used a Smith vortex so I could use a direct thread suppressor with it.
Other than that, I haven't changed anything internal. I put on a RIS and a Crane stock, as well as an Ergo grip, but that's it.
I shot 100 rounds through it the other day, M855 and Tulammo. The Tulammo was too weak to lock back on certain mags, but that's to be expected. The next time I shoot steel I'll just switch back to the H buffer.
Is there anything else I need to change? I think it has Colt's newest extractor spring, and it seemed to be ejecting in the right direction. It's about a 2014 production I think. It was one of the Mexican overruns, and it was so nice I decided to keep it as my main AR and register it.
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