Triarc 20rd mag, Staccato 17rd mag, Cheely Custom blue magwell, and Atlas base plates: can add 1-2 rounds depending on mag type. $340 cash for all or $360 trade. May trade for 5.45 or 300blk ammo or Holosun 507Comp. Local meet in Plano. Text @ 214 7eight5 195zero. Check my other listings for more trades.