I WOULDN'T TIE UP A LOT OF MONEY ON THE UPPER ARMS.UNLIKE THE THE LOWER ARMS,WHICH ARE BEING PUSHED UPON WHEN LAUNCHING,THE UPPERS ARE BEING PULLED ON.THEY DON'T SEE THE DEFLECTION AS THE LOWERS DO(STOCK ARMS).PLUS,THEY HAVE SMALLER DIAMETER BUSHINGS,WHICH HAVE LESS MOVEMENT,UNLIKE THE BIG SQUISHY BUSHINGS OF STOCK LOWERS.
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