I'd think twice about dealing with Middlesex - if they are even still in business. A few years ago I ordered a .62 cal smoothbore. I was also impressed with the lifetime lock warranty. I had been in e-mail contact with Pete's wife, who provided good answers to my inqueries ... Pete was always too busy rebuilding/servicing locks t do much communicating.
What I rec'd. was an assembled (barely) musket that needed extensive fitting, strip & refinish, in addition to lockwork. Although the frizzen sparks like the 4th of July, and after hundreds of rounds fired, shows no gouging or wear, the internal lock parts were inferior quality, non had been hardened, and the sear end where it engages the tumbler notches, bent after firing about a dozen rounds.
I can see why Pete has no time to himself - he's busy "working on" all those lousy, soft locks.
I returned my lock to Pete, and about 3 months later it was returned. Another dozen rounds fired & the lock froze up with the same bent parts. There was no evidence that anything had been hardened.
Communications between Mrs. Pete suddenly ceased, and my offer to harden his sear & tumblers for him remained unanswered. Largely conjecture but, someone said that his staff all bailed out & apparently he took away his Wife's internet access (or maybe she also left town?)
My musket is a showpiece after reshaping the stock & refinishing it. The lock is now reliable with properly hardened engaging surfaces.
I was unable to get any responses to further inquiries about availability on some of their other products, so even waving money at Middlesex with more offers to buy, all went unanswered.
Their website is still live, but I'd be hesitant to buy from them; there are other importers, who communicate better and have the actual feel and response of a legit & concerned retailer.