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Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver
$1,499.95
$1,399.95
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Happy Customer's Review of Primary Weapons Systems MK109 MOD 2-M, .300 AAC Blackout, 9.75 inch Upper Receiver
Unfortunately after 3 range sessions the bolts that hold the piston rod into the BCG became loose and cause the rod to break. This is poor QC and these bolts should be installed with loctite and torqued.
Would Recommend:
No