Originally Posted By foxjordan22:
Are they QD or thread on?
It's a two point reflex mounting system, thread on.
The MRS has wrench flats so it can be installed under the handguard from the front, like on the Compressor. It can be installed with Loctite where it will not come loose and can be later removed with a wrench. It can be torqued to the barrel which increases the accuracy slightly, helps maintain consistent POI, and also helps prevent it from vibrating loose. You can use a 1 3/8" wrench or an adjustable wrench, channel locks, vise grips, ect. You can install them by hand, hand tight, but I wouldn't trust it for extended periods of time. You could screw it on by hand, take a couple shots and remove it without issue. I personally much prefer this design over any QD system on the market which is why this is the route that we took. There are many Cons to a QD mounting system with really only one Pro, which is quick install and removal. It's also sometimes not easy to take advantage or use a QD system when the suppressor is hot, which only takes about 60-100 rounds before you don't really want to be touching it.