NineInchNails

Icarus2.0 made a great point that I didn't consider before I posted previously. The height of the mount for an AR is typically MUCH taller. For a shotgun, you want the lowest mount humanly possible. It's not really a great idea. Did you strip the threads or the head of the screw?

With a QD mount, you can swap an optic back and forth between weapons. Just keep track of the required adjustments (windage & elevation) as you are sighting it in for the shotgun. That way you can roll back those adjustments as you return that optic back to the AR. Obviously you'll have to shoot to confirm zero.

Several years ago I handled an M4 with a collapsible stock at a local shop. The stock was difficult to adjust from one position to another. I kept fiddling with it and hard a hard time with the short amount of time I was able to handle it. Even the guy who worked there had a hard time with it too. I really wish someone would come out with a similar collapsible stock at a reasonable price.

I wasn't in the market to pay nearly $50-$90 for a charging handle so the AU was a perfect fit for me. It looks better in person. Pics don't do it justice. I thought I'd prefer a more cylindrical version like what RX Arms makes, but I'm more than satisfied with the hour glass shape of the AU version.

I don't see how it could harm anything by cleaning it up using an appropriate thread tap.

Shepherds are fuzzy and cute, but I'd recommend a Rottweiler over one of those any day.

I would ask ... exactly what circumstance would require you to allow someone to search your M4 without your consent to confirm this "compliance" you speak of? Exactly what probable cause could be claimed at an alleged glance? What would be required for a warrant to be executed in order to allow this to occur? If anyone inquires, tell them to piss off. Sounds like jumping through hoops just for sake of hoops.

Just out of curiosity, you said you installed a +2. Did you also get a new (longer) spring with that +2? If not, that is likely the problem.

I like steel targets. You can attach lengths of chain to them using a 'Chain Quick Links'. I'd use blue Loktite because the nut will back off for sure with use. You could use other types of links which you can open and smash closed in a vise if you want so that they cannot ever open on their own. Like you said, you can hang the target/targets from a low branch. I'd just tie them to the branch or something like that.

I once had a Remington 870 Cerakoted after a house fire (lots of corrosion). They coated the interior and the exterior of the receiver, the forend tube assembly, the magazine tube and the barrel. Cerakote is a coating so it adds 1,000s of an inch thickness to all surfaces. After Cerakote was done, that shotgun was nowhere near as smooth as it used to be. Actually every single shotgun I've ever handled since then, the action has felt much smoother than mine. I don't know if they just did a poor job, applied too thick or if that's just the nature of higher tolerance parts with the additional mil thickness of Cerakote. It works fine, but just not what you would call 'smooth' with the action. I know people here have more experience than me with Cerakote & M4 receivers. Maybe they could comment on whether it could affect the tolerances/action or not with your receiver. Without more info, I'd be more concerned with applying Cerakote to the exterior than all of the interior if that is possible.

I have a 9mm pistol on both sides of the bed, but if something goes bump in the night, I go for the Benelli M4 with tactical light which is 3' away from the bed. I have a Remington 870 stashed downstairs. If I have to pull the trigger, I want the most lead on target as fast as possible. Maybe I'm just naive or presupposing most scenarios are best solved with a shotgun. One scenario I can think of where I'd prefer a pistol or an AR ... is a hostage situation where a more precise shot is required (over a shotgun).

It's kinda strange that one model of their collapsible stock is $349.99 on one site, but $279.99 on another. The exact same stock. The prices appear to be different for all of the products I compared.

Price has since jumped to $15 and $5.95 for shipping (at least for me). Oh well, just placed an order. Best deal I've ever seen for such a charging handle with the features I want. I like that it is non-rotating (free spinning) and is as large in diameter as shown in the pics.

I Googled it.

Great video! I tried to insert the video here, but ran into problems.