OMG! I'm sorry about the major late night brain fart. Earlier when I was describing some of the tell-tale signs (identifiers) of blitz action receivers I noted the retainer and locking screws for the barrel lug "locking" mechanism. I must have had "locking" on the brain at the time but I meant "cocking" mechanism (lever) screws (pivot and locking). Good grief!
Marcus
-------------------- Happy the man, and happy he alone,
He who can call today his own:
He who, secure within, can say,
Tomorrow do thy worst, for I have lived today.