Geissele MK4 extensions preventing installation on Mega Billet upper

[68whiskeyncoke]

Any work around to this? I suppose I could take a dremmel to the rail and cut it out but then i'm not sure how well the tap screws will function.

42531

[556BlackRifle]

Sorry man. No easy answer here. This is a known issue with the Mega Billet Upper. You might be able to fit it with a small file but honestly, I wouldn't do it. I'd sell the MK4 and buy a compatible rail or switch to another upper.

[jrcii]

When I sent my stuff off for Cerakoting, Rainier Arms did a little grinding work on my MK8 and it is still solid. I think that's going to be your answer.

JRC

[03scgt]

Dont even think about touching your upper with a dremel lol.I have an mk8 on mine and all you have to do is dremel down the anti rotation tabs on the inside of the rail.It took me about a half hour total and 20 minutes of that was because I kept test fitting the rail to only remove as much as needed.Its a very simple project and once the rails on you cant even tell its been done.


http://i236.photobucket.com/albums/ff141/PBALLDONKEY/Mobile%20Uploads/20161113_105024_zps0xkl5hyc.jpg (http://s236.photobucket.com/user/PBALLDONKEY/media/Mobile%20Uploads/20161113_105024_zps0xkl5hyc.jpg.html)

[68whiskeyncoke]

haha, definitely meant rail. Not upper.