Bushmaster 5 round mag conversion

Discussion in 'Black Rifle Forum' started by Beads, Jan 20, 2013.

  1. Beads

    Beads

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    Notice the 5rd mag is the same size as a 20. To increase the amount what do I need to do? Just change the spring? What size spring?
    Thanks
     
  2. MajorD

    MajorD

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    Iirc the bushmaster 10's have indentations in the mag body limiting it to 10. Nothing you can do. The older colts had a u shaped limiting block under the floor plate- you removed the floor plate tossed the u block and it became a 20. Some of the ban era bm 10's had the floor plates riveted in place so you may be stuck with it that way. Ny just passed a law we can get 10 rounders until mid April so trade it to a ny guy for a pre ban 20