Home Forums Hunting & Shooting Hunting Rifles Modifying the magazine -- RAR 223

If given the choice, I'd much rather use the Cotis/SAS mag than dork around with stuff like this. But for those that can't wait, here's a pictorial of the modification that I did.

Did it ~6 months ago and have well over 1000 rounds thru the rifle and mag. Max COAL is over 2.45" and feeds great.

Jason

So the rear piece is actually two pieces? You filled the rear and the milled it deeper. Looks good.

Is adhesive necessary to re-attach the rear piece? I was under the impression that they just snap together, but haven't taken one apart yet.

There is no adhesive, they just snap together.

Word to the wise - boil some water, drop your magazine parts in there for 30 seconds or so before you assemble or dissassemble. Really helps to keep you from breaking those little tabs.

David

Fill-n-mill is correct.

Cotis has instructions posted somewhere on how to take the mag apart w/o damaging the tabs. The emblem glue took care of mine. In any case, the tabs are wimpy but once assembled they aren't an issue.

Thanks

how deep do they need to be milled?
its hard to tell from the pics.

As deep as you need

Take a look at the pics and you can gauge how far the white goes up the sidewalls.

Tag

Great idea.

Tag

tag

This is precisely what I had planned on doing. I even mentioned it in one of the early threads on the short COAL issue with the .223 Ruger American mag.

Great job!

tag

Actually did this myself today. Have ended up with about 2.54" oal which mightn't be necessary but seems to feed all rounds ok.

75g Amaxes on the way.

Good deal, thanks for the info.

I finally took the time to do this. I dropped the magazine in boiling water for a few minutes and still broke off two tabs. I was not being hamfisted, those tabs are delicate.

I filled, then drilled and milled on my drill press, and reassembled with epoxy. It seems to work great, I just need to go shoot it.

Tag post