The lazer drill is difficult to weaponize but could be used in a trap I suppose, would be an RF heavy trap though... As for the MFFS security system, it's good for defense but setting it up to attack might be a tad difficult. You could do it in a covert way I guess, sneak up or under a mages base and sneakily set up the security system powered remotely via a tesseract.
Also
@Antaioz Purplefantum was talking about the security feild not the force feild, MFFS has a block that can make an area in to a guaranteed death zone. It costs a lot of power to run but power cost is nothing these days.
@RJS whether the poppet works or not doesn't matter the MFFS security feild periodically kills it doesn't just pop once and leave it there. If It senses an intruder it will keep pulsing untill the feilds power supply drains or the intruder dies. In other words you'd need a lot of poppets to just "walk through".