Stainless Steel P90/PS90® Compatible Upper Receiver Spring Set

  • FN P90/PS90® Compatible.
  • 17-7 stainless steel and heat treated for unparalleled durability and weather resistance.
  • Comes with a thin 15mm wrench for easy barrel installation.
  • Tested for dependability and reliability under a variety of conditions, both with and without a suppressor and on full auto.
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