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School me on 223 AICS mags

Hickswr

Gunny Sergeant
Full Member
Minuteman
Sep 5, 2019
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Alabama
Put together a Aero Solus with a criterion 223 1:7 twist match chamber for a plinker.

Thought I had procured a 223 aics mag during MDT Black Friday sale but can’t find it anywhere.

Which AICS mag is reliable and accommodates long bullets?

Will be used in a KRG Bravo to start with.
 

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  • 3.055 Outside Length
  • 3.90" Rear Height (same height as MDT 10-rd .308 metal magazines)
  • 2.50 max cartridge overall length (COAL)
  • Polymer feedlip inserts extend ~0.5" past the end of the metal feedlip backer, thus retaining the round longer, helping ensure the tip of the round has entered the chamber before the rear of the round is released.
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  • .223 REM family of cartridges: 10 Rounds
  • MAX COAL: 2.44"
re: MDT clipazines for .223 Remington

The plastic ones they presently have do not look like the fugly ones I own, like the one below.

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Looks like things have changed.

The steel ones can accommodate longer bullets compared to the plastic ones due to having thinner walls.

Can't speak for the KRG chassis - but from my personal misadventures - MDT clipazines in an MDT chassis never have any issues.
 
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I run the MDT poly mags that I got in the Black Friday sales and they work great in my .223 with 75 ELDs at 2.470”. Not sure why they list 2.44” on the site but it’s not what I have in my 8 mags. Here’s some pics including an unopened mag listing 2.550” as max internal length.

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MDT recently changed the poly mags. They are now physically bigger, but no longer hold 10 rounds of .223 Ackely (still will hold 10 rounds of regular .223) and went from a 2.550 max OAL down to the 2.440.

Well that sucks. Why would you make them physically bigger but limit the OAL? Makes no sense but glad I got mine.

OP guess you have to go metal bodies now.
 
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I currently use MDT metal mags for my 223 in a KRG X-Ray. Has worked very well for me. Curiosity, and a good deal, got the better of me and I bought a couple of Magpul AICS 223 mags. They are extremely loose and rough feeding. Honestly haven't given them a good chance but after how sloppy they were I had zero desire to even try them.
 
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There is a little bit of adjustment on the krg bravo for the magwell. I had to tighten mine up a little for MDT poly and metal mags to both work 100%. The metal is a little tight now, but I had issues feeding with the poly mags before I tightened up the magwell.
 
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