Locking piece for hk33k

Discussion in 'General Rifle Discussion' started by 2tone0311, Dec 13, 2012.

  1. 2tone0311

    2tone0311 New Member

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    Picking up a hk33k tomorrow and ultimate plan is to sbr it and suppress it. Does any one know which locking piece I should get if it doesn't have already to use with/with out suppressor.