The KAK Enhanced bolt carrier group for AR9 is a complete 9mm BCG for PCC-platform builds (brand part no. MO-KAK9MMENHBCG). KAK Industry makes the carrier from 8620 steel, weights it to work with all types of hammers and finishes it in nitride. It runs with Glock or Colt style magazines. The gas key is machined billet and properly staked, the extractor is a fully machined M16 type with a phosphate coating, and the firing pin is heat-treated 8740 steel with chrome plating.

Key Specifications

• The group is a 9mm PCC-platform right-hand bolt carrier group for AR9 builds.
• The carrier is 8620 steel, weighted so it works with all types of hammers.
• The gas key is 4130 machined billet and properly staked.
• The extractor is a fully machined M16 type with a phosphate coating for durability and reliable extraction.
• The carrier finish is nitride.
• The firing pin is 8740 steel, properly heat treated and chrome plated.
• The listed weight is 15.42 ounces.

Frequently Asked Questions

Which magazines does the KAK 9mm BCG run with? KAK Industry lists it as working with Glock or Colt style magazines, so it matches the magazine well of the lower it is installed in.

Does it work with any hammer? KAK Industry designs the steel weighted carrier to work with all types of hammers.

What is the carrier finish? The carrier is finished in nitride. The gas key is staked, the extractor is phosphate coated and the firing pin is chrome plated.

Buy the KAK Enhanced Bolt Carrier Group, AR9 9mm, Nitride

A staked gas key, a heat-treated firing pin and a coated extractor are the details that decide how a 9mm AR bolt group holds up. Order it from our Lubbock, Texas gun shop for fast shipping, and see more bolt carrier groups while you are here.