This is a Remington known as the Trigger, model 18491.
Remington Trigger Block Gun Locks provide additional security for your firearms. Featuring a hardened steel center locking post and rubber insert pads to prevent scratching" these locks are designed for durability. Fit most rifles" pistols and shotguns.
Features:
Rubber Insert Pads Prevent Scratching
Hardened Steel Center Locking Post