If you are looking to build an AR-15 for hard use, to standards that exceed Mil-Spec expectations, then look no further than Sons of Liberty Gun Works. Every component of this bolt carrier group has been properly heat treated and is designed for reliability and longevity. The carrier is machined from AISI 8620 aircraft quality steel and features a full auto profile with durable manganese phosphate coating. The bolt is made from Carpenter Technology No. 158 Alloy and has been magnetic particle inspected as well as high pressure tested to ensure that it will run for many years to come. Every part on a BCG has a specific function and must be made to the highest standards so it doesn’t fail. The gas key is made from 4130 chromoly steel and has grade eight properly staked hex screws to prevent it from coming loose over time. This SOLGW bolt carrier group is a great choice if you are building or upgrading an AR-15.
Features:
- Manganese phosphate finish for corrosion resistance
- HPT and MPI
- Hard chromed bore and gas key
- Carpenter Technology 158 alloy bolt (shot peened)
- 4340 Tool steel extractor (shot peened)
- S7 Tool steel ejector (shot peened)
- Full auto profile 8620 alloy carrier
- 4130 Chromoly gas key with staked hex screws
- 4340 Chromoly cam pin
- 8640 steel alloy firing pin with chrome plating
