Used tisas mac 9ds. Has an 11lb atlas spring (have 3 other atlas springs) along with a magwell for the gun. About 700 rounds Down it $700 FIRM. 214-546-7613 pickup in Plano. Comes with 2 17 round mags, I prefer Zelle or Venmo if possible, can include phlster floodlight and surefire turbo for 300 extra NO TRADES