Esstac 556 KYWI (Kydex Wedge Insert)

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(252 reviews)
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Esstac 556 KYWI (pronounced "kiwi")

by Sean
Esstac Shingle Mag Pouch with KYWI - I like that these mag pouches bridge the gap between hard plastic and soft/ cloth mag pouches. The retention is perfect. I prefer open top mag pouches to any other type because when you need more ammo you REALLY need more ammo. Fumbling with a velcro flap or even a bungee can be out of the question for the first 4 mags at a minimum. View More SKD Staff Picks

Don't Like bungee topped magazine pouches? Prefer an open topped pouch for rapid magazine changes? Then these new user-installed Kydex upgrades for the Esstac Wedge magazine pouches and Boar series chest rigs are for you.

The Esstac KYWI (Kydex Wedge Insert) allows you to have the option of swapping out all your existing Esstac bungee retention inserts with a quick open topped friction retention design, or swap out just a few for quicker access while leaving the rest of the mags with the added security of the bungee topped inserts. Magazines in the Kydex have enough compression against them to hold the magazines in place even when the pouch is upside down yet with a quick pull on the magazine they release for speedy deployment.

The spring loaded nature of these Kydex inserts keep the mouth of the Magazine pocket fully open for ease of magazine reinsertion yet hold the mags tight under compression. The apex of the KYWI that contacts the magazine sits above the Mag catch bump when the magazine is in place, so the mags "click" into place.

These will work with all Boar series chest rigs and Wedge pouches in 5.56. They are compatible with Pmags, USGI, Orilite, Thermold and Lancer magazines as well as most other 5.56 AR-15/M4/M16 type magazines. Aluminum and steel magazines may need sharp edges chamfered to alleviate excessive wear to the Kydex.


  • 5
    Mag Holders

    Posted by John on 30th Apr 2021

    Works as described. Easy fit and secure so far.

  • 4

    Posted by Gregory perrigan on 27th Apr 2021

    These work great in soft mag holders, and keep the mags in verry well. I put them in my plaquerd for my plate carrier, i shook it as hard as I could and none fell out.

  • 4
    seem solid.

    Posted by Mitchell Markey on 18th Apr 2021

    Bought 3 to get rid of goofy elastic straps on plate carrier, haven't ran them yet... seem to have plenty (almost too much) retention seem to serve there purpose. 7 dollars heck yes.... no brainer.

  • 5
    Kiwi Insert

    Posted by Matt A on 13th Apr 2021

    Work as advertised. Fast shipping. I hate bungees as I want a no snag rig and they slow things down. Inserts hold things in place well.

  • 5
    It is what it is

    Posted by Patrick Ly on 7th Apr 2021

    Simple and effective. Bought this one particularly for use in my Spiritus Systems rig in conjunction with wild bill tactical adapters... works like a charm!

  • 4
    Solid product

    Posted by Will on 2nd Apr 2021

    Good retention, fits in every single-mag pouch I've tried so far (Condor and standard issue).

  • 5
    Exactly as expected

    Posted by Tim on 30th Mar 2021

    Fit my mag pouches perfectly, little stiff at first but spent a week inserting and pulling mags out to brake in.

  • 4
    Kydex Inserts

    Posted by MH on 29th Mar 2021

    They work well and fit snugi wish they were maybe a little bit longer on the sides because you can still get a small material flap smashing as you reinsert the mags into the pouch. But you don't need to use bungees or anything else to hold your mags in once in place.

  • 4
    Awesome, just not gonna work

    Posted by Sam on 5th Mar 2021

    Got these for my kit. I have the crye avs three mag pouch with the folding flaps. That’s what I wanted these for but it won’t fit with the mags. Wanted it so it was a super smooth draw cause the mags get stuck in the pouches some times and thought this would correct it. Gonna throw them in my chest rig tho but now I’m still stuck with the problem I started with.