Cutting Down a BCM KMR?

[Tokarev]

I was unable to figure out an easy plan for the KMR.

There might not be an easy answer. At least not for an 8" KMR rail.

Another option might be to go with a 12.5" barrel and a 10" BCM. This probably wouldn't be as outright nifty as a 9" upper but it would be much easier to assemble.

[redmist]

It'll be awhile.

I've recently picked up a receiver set from 2A and am now wondering what to do with it. I had kind of been thinking of building a 16" carbine with a BCM or Ballistic Advantage pencil barrel. I still might just do this route but it might be pretty fun to have something short and light in 300BLK instead.

Sent from my GT-P3113 using Tapatalk

If you can wait it out a month and a half at the most... 2A will have a 7" Solution that matches the upper on the BALIOS-lite

Mods, if this is considered out of line, please delete.

[GH41]

Not sure how much magnesium is in the alloy but I would be careful sawing and grinding on it. Quick lesson.... How to burn down a workshop... You fabricate a couple of parts for you drag bike out of some magnesium you came across... The work involved sawing and grinding... You then put a piece of steel in you vise and hit it with a sidearm grinder... Sparks from the steel ignite the magnesium grit on the bench... last step... attempt to put the fire out with a water hose!!

[markm]

This is a painful thread.

[Eurodriver]

You would be much better served by buying an 8" rail.

[uffdaphil]

It's no big deal. My local handy guy hacksawed and filed a 10" for my 7.5" fun gun. Can't remember what I blacked the edge with. Does it really matter if you have to touch up occasionally? I think it looks great with the KX5.

[Rayrevolver]

Yeah, that works well. Most folks with the AAC 9" go with a URX3 8.0 but I like the KMR/NSR rails.

[bzdog]

Phreakish had a few tips here:

https://www.m4carbine.net/showpost.php?p=1950769

[blackbox]

maybe you can do a Warsport cut? thats a thought... i'm just sayin'

[bzdog]

I do plan to cut my 9", but I'm also not in a hurry.

I've been thinking I'd go with a non straight cut- preserve a solid edge. I was thinking Dremel followed by file then sand.

My objective is to allow the ports on my MAMS to clear the rail.