Wow I thought that it was common practice to file or cut the tops of the screws off. Clipped mine off the first time I saw someone go blender in game.

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A-5 / E-Grip (WAS) / Aftermarket Ratchet / CAR Stock / 12" PPS Brass Barrel / Remote Line / 68/4500 Carbon Fiber HPA / Polished Internals / Maddmann Spring Kit
(See my profile for second A5 Setup)

The future holds:
X7 Vented Cylinders for both my A-5's