Frag Out! Magazine

fully home. Lock it in place with the clamp and torque the clamp screws to the value stamped on the Handguard (2.5 Nm). Then drop in the conversion trigger ho - using and secure it with the locating pin. Install the butt module that links the trig- ger housing and the receiver (it performs the same structural role as a conventional stock mounting point), and then slide on the cheekpiece/stock cover — slide it onto the Picatinny rail until it hits the stop and lock it with the butt module pin. That's it — a Grot becomes a bull-pup. Of course, after re-mounting sights the weapon must be re-zeroed — the sights sit higher in the bull-pup than on the standard rifle, and that raises the point of impact relative to point of aim. You'll also need to think about sight placement because the balance and shooter geometry in a bull-pup are completely different, and the controls are rearranged. If you need to eld-strip the rifle for cle - aning with the conversion you don't have to remove the Handguard even if you plan to remove the barrel — access to the barrel retention screw is gained by removing the conversion trigger housing. A characteristic detail of the conversion is the serrated Picatinny rail like the one planned for the Grot A3, and the conver - sion's magwell allows use of Magpul PMAG M3 magazines — these do not t in Grot A0/A1/A2 magwells because those earlier magwells have a protrusion on the rear wall that prevents deep seating of those maga - zines. As far as we know, the Grot is probably the only carbine in the world that can be converted from classic layout to bull-pup using just one tool in mere seconds, and the conversion itself is noteworthy. Bull-pups typically present two main pro - blems: magazine release ergonomics and trigger mechanism behavior — especially the feel of the trigger. On most bull-pups the magazine release sits near the magwell (a logical simplica - tion), which is where it's easiest to mount a release button without complex linkages. With the Grot conversion the mag-release button remains exactly where it is on the classic rifle and works normally. If for some reason the primary release fails, there's an emergency magazine-release button on the left side of the trigger housing at the ma - gwell that lets you lever the magazine free directly from its catch. The conversion's trigger mechanism, surprisingly, works better than the classic - -layout trigger (we're not talking about the separate Geissele trigger mod). The trigger in the conversion is much smoother, not gu- mmy, with a very distinct wall that requires only a small amount of force to break. Re- set is short and positive — "crispy," — and frankly it's remarkable: trigger performance is the biggest headache in almost every bull-pup, yet inside the conversion's trigger housing you'll nd a mechanism that looks almost like clockwork, and it performs very well. The safety is in the same location and behaves like a military-pattern safety: mo - ving from "safe" to "re" the lever swings through about 45°. The only notable change in control layout between stamdard and bull-pup versions is 17 www.fragoutmag.com FIREARMS

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