They represent one of the MOST durable sidelock designs ever produced.....I know of individual pieces still in use in Europe with 100,000 plus Heavy pigeon loads thru them that have scarcely ever had a screw turned on them except routine maintenance.....They are,by design, very "renewable" engineered with the idea of being easily tightened or brought back to factory specs , but only after LOTS of shots....

Among the most reliable of all single trigger designs (particularly the non selective type) ever put into wide spread use...

Enjoy it, you have acquired a truly FINE gun....