I have a home defense Remington 870 that I am looking to mount front and rear sight set. There are currently no mounting options for these and I assume there must be welding or something like drill/tap/thread. I have not bought these sights so I am open for options. I have looked at current ghost ring night site mounts roughly about 100 dollars. I would like to know of a reputable source who could mount these and offer some type of pricing. Thank You.