Originally Posted by GBBR
Power up silencers for mp7 and mp9 will increase range and accuracy, or at least, is supposed to. Those silencers are made by angry gun. Those 2 are the only 2 avaiable on the market able do " increase accuracy" others are simply cosmetic and or hiding a longer barrel upfront
Two stage innerbarrel NEVER increases accuracy
You'll never see a video of a retailer testing the range -because the second barrel actually alter the direction.
It's a great concept, however poorly executed.