>>64172874
On their own website, wbp describes the bolt carrier as "machined from forged steel" and the trunnion as just "forged"
I'm not gonna get into the shitflinging on whether or not the trunnions are actually billet, but the minutia of verbiage used in product descriptions doesn't prove manufacturing processes of any of the parts. Even if the trunnions are billet, nitpicking product descriptions doesn't show that the bolts are billet too.