This came to us fro @AlabamaArsenal

From Alabama Arsenal: Got some hands-on time with the Desert Tech Quattro and this thing is impressive. We’ve had 100% function so far, the mags have been working great, and the lower has full ambi controls with right side bolt release and bolt hold open. I’m really impressed with this thing! Might make a great test host for 556 silencers as well! Also going to need some more @callaway_ballistics 556! We can dump a 53 round mag in about 8 seconds! But don’t tell Hal!🤣.#deserttechquattro #deserttech