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Description
Complete M16 angle radius cut bolt carrier group assembly
The QPQ nitride/melonite treatment hardends the surface to 70 RC and reduces friction as well as adding corrosion resistance inside and out
Superior to chrome lined and parkerized bolt carrier groups
MPI tested and marked. 9310 bolt nitride/melonite treated with additional cryo freeze for extra strength
Requires very little lubrication and has a very slick surface
Corrosion resistance inside and out
Side staked gas key with grade 8 fasteners
