This allows you to adjust the ejector up and down so it can be positioned with the bolt perfectly every time. Our ST-EMB features an extra wide mag catch slot that allows the end-user to adjust the block up and down so that the feed ramp can be positioned perfectly every time thus increasing your reliability.Īnother reliability increasing feature of the ST-EMB is the patent pending adjustable ejector. The absolute biggest flaw with the 9mm platform is that there isn’t the ability to have the needed adjustability to work with a wide variety of aftermarket parts, magazines, and ammo. The ST-EMB also utilizes the standard AR-15 bolt catch so you won’t need to change it out for another aftermarket part! The entire installation process takes about 5 minutes to get the ST-EMB up and running inside of your lower and takes about 5 minutes to take it out, so it’s perfect for you guys who love to switch calibers at the range all day! There is zero gunsmithing required and zero permanent modifications to the rifle/pistol are made.

Here’s a list of compatible mags for you:Īs you can see, you have a great selection of mags to choose from so you won’t be stuck with only having to buy one manufacturer’s magazine! Installation of the ST-EMB is a breeze with our patent pending triple tension pin system that insures that the block will NOT move or fall out even under the harshest shooting environments. We know you’re wondering if the ST-EMB is compatible with different magazines from different magazine manufacturers. The ST-EMB’s one-piece design offers the same advantages that are found in having a dedicated 9mm lower but without all of the dis-advantages that come with it! Why should you limit yourself to a single caliber with your lower and be stuck with zero adjustability when your rifle is not cycling properly? We know, it makes absolutely no sense and that’s why we designed the ST-EMB for you.

The Spike’s Tactical Enhanced 9mm Mag Well Block is a reliable, adjustable, and most importantly affordable Mag-Well Block that no other on the market can compare to. Spike’s Tactical Enhanced 9mm AR15 Magazine-Well Block SM9B010

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