Esstac 556 KYWI (Kydex Wedge Insert)

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(258 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
    Kydex wedge

    Posted by George C on 4th Oct 2021

    Works as advertised I’ve used it for almost 10 years on all brands of magazines even AKs

  • 5
    Great magazine sleeves

    Posted by Michael on 3rd Aug 2021

    I acquired a vest to utilize by my unit. The vest has 3 magazine pouches built into the chest. These inserts slide into place and opened up the channel for the magazines to slide in with ease. They stay secure and I have used them for two 8 hour training days. This was a perfect find for me and my issued equipment.

  • 5
    Kydex sheath

    Posted by Charlie Haskell on 23rd Jul 2021

    Absolutely perfect ..wrap a little velcro around top edges to close them up a need to buy anything else..great job SKD as always

  • 4
    Great retention

    Posted by Steve on 20th Jul 2021

    A little tighter than expected, but overall an absolutely great product.

  • 5

    Posted by Terry Baldwin on 1st Jul 2021

    I use these on any magazine pouch / pocket that I can fit them in. Reliable retention without the down side of bungee cord or flaps.

  • 5
    I was going to purchase the Haley Strategic inserts but after see the Youtube reviews, I thought I'd check it out. So far I have 0 complaints about this product. The overall look is not as sexy as the H.S brand but for something which will spend its'

    Posted by Garland Grayson on 30th Jun 2021

    I'd recommend this to anyone and I'm gong to get some more

  • 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.