Currently it extends the duration of tripmine grenade by about 20 more seconds. This armor piece is clearly designed for PvP and the biggest problem with tripmines are that they can be shot and destroyed easily. It'd be cool if Young Ahamkara's Spine extended the duration and made tripmines undestroyable.
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that's why you throw them on walls. - i use them in a way that when I see people capturing my point I throw it behind them or on the side of them. I'm make sure that when I throw it , it lands facing towards the enemy and it's a OHK. I've gotten double , triple and four kills at once. love it.