The sons of liberty gun works.308 mk10 lr308/sr-25 bolt carrier group is a high-quality, precision-machined bolt carrier group that is perfect for building a.308 winchester ar-10 or sr-25 rifle.The bolt carrier is made from chrome-plated steel with a nickel-plated steel bolt, which are both resistant to corrosion and wear.
Finish: NP3 Coated
Model: MK10
Material: Steel