The Jurassic complete bolt carrier group is fully assembled and ready to be installed in your Ar15.
This bolt carrier group is full auto rated making it more than strong enough for your semi auto AR15.
It has a Nitride exterior and inside is used for added durability and scratch resistance.
Machined to USGI specifications. This M15/M16/M4 carrier includes the proper Mil-Spec gas key. Gas key is Nitride coated and heat treated.
For a great BCG that you won’t break the bank buying, try Jurassic Arms.