Leaderboard

The nylock is good enough. If reusing the old nut, use some blue Loctite. I bought a bag of these. Basically a lifetime supply for what Brownells charges for one. https://www.amazon.com/gp/aw/d/B088JRNP97?psc=1&ref=ppx_pop_mob_b_asin_title

Never seen a torque spec given. Most of the holding strength is due to the threadlocker anyway. If you tried to just force your way thru the thread locker without heating the components, you’d likely strip the threads first. You want this nut tight, but not hanging from the wrench tight. One slip of the wrench and you may mar up your receiver or round over the nut. Since you’ll be holding the extension in place with the 19mm wrench, the 19mm is generally a lot shorter than the 27mm wrench. So if you’re over powering what you’re holding the 19mm wrench with, you’re over the limit. I’m about 200 pounds, so I lean on the 27mm wrench to set it good’n’tight. With every portion of the threads and nut glued against the receiver with Loctite 271 after an acetone bath, that thing isn’t going anywhere unless you break out the heat again. This is where it can be a real pain in the ass to get your timing of the extension perfect. Even being 1 degree off, you’ll notice with the collapsible stock. Arguably this is the hardest part of the job.

I used blue locktite when reusing the original nut. If you have a new nut with unmolested nylon insert I would not use any locktite that is what the insert is for.

mandatory matching 922R compliant gangster grill

The Benelli m4 11718 has the NP3 coating but it has a 5 shot mag tube and a Pistol Grip stock. Both the magazine tube and stock could be upgraded to mimic a 11711. But you would also have to upgrade some other items to be 922r compliant.

OK guys. Thanks for the response. I think I will go ahead and get my order in with the company that will 3D print the final tools. I will let y'all know when they are in.

Mine came with all those goodies. Bought off gunbroker

M4 desert camo M4 LE European 50cm (~19.5") barrel