I had H&M do a muzzleloader for me and it's great. My "covid project" M70 will be back from JES soon and will need new metal finish. I'm on the fence about either having H&M nitride it or Mahovsky's Metalife (hard chrome) it. Similar price for both but they can't nitride the aluminium trigger guard. Guess it boils down to if I want black or silver.
Thought about Cerakoting but can't justify spending more money for a less durable finish.