Mk4 Strafer Shoots 150-175 RPS with a 7500 round hopper. These were made by 3P, or Pipers Precision Products and distributed by Xcalibertactical.com to MIL/LEO as riot control guns. Neither company are around anymore. These retailed for about $1,000. Comes with the regulator seen ** DOES NOT COME WITH SIGHT** Throw me an offer, only looking to trade for real steel items such as Lvl 4 plates, NODs, attachments. Things like that. Not in a rush to sell, I have a trade lined up for a $3,000 motorcycle already. Just seeing what’s out there to offer.