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Got mine today. Should have time this weekend to install it.

I find benefit from the c-stocks ability to shorten the gun for storage, the M-4 is not a small gun and would not fit in the case I use without it. I am eagerly awaiting the rx-arms 6 position recoil tube. I can shoot mine presently from either the middle or third notch but neither feel quite right. I'm confident the extra positions will rectify that.

Is the Taran Tactical Oversized Safety still available?

There is no button for both…. I have both…

You know, I never thought of that, but you are right. All my rifles are SBR and my gauges are SBS. And I don't have a huge safe, just enough for my collection. I'd probably have to take my shelf out to fit a field stock. I'm with you on that 3-pos tube just not quite feeling right either, hoping the 6-pos will feel better.

I just purchased a limited M1014 with the flag stamp off gun broker and believe it or not I got it for $1300 The seller had put a standard gun stock on it and the two round Benelli extension So I searched around and got the false mag extension for $20 and I also found a Brand new Benelli skeletonized stock that came on it it originally for $189 I just wanted the original parts in case I needed to put it back to stock some day I also found and purchased the Benelli recoil tube to make it collapsable

I have mentioned this in the instructions on my website, but wanted to make a note here. The Rx 6 position tube should be installed leaving around 1.5 threads exposed in the reciever. In my experience this is how OEM looks before it is removed. And my tube is designed for this.

Small update. After a long 4-5 months since I initially started this project, I am happy to say, the tubes are machined and completed. Im hoping to get them off for heat treating next week, then PVD finishing thereafter, slowly but surely...

I just took a bit of a deep dive into QPQ finish. And from what I can see, briley seems to be skipping the notch heat treat, and instead relying on QPQ finish (quench polish quench), which is a type of case hardening (I am only coming to this conclusion based on the info on their website) QPQ case harden depth ranges from 0.04mm - 0.45mm. And boasts a 60-70 Rockwell hardness from what I can see online. I am deciding to go with an actual heat treat on the notches, precise and repeatable technology via computer programming, which will give a case hardened depth 2-3x that of QPQ, of 1mm-1.5mm 55-60RC. For me, I value depth of the hardened case. when we are talking about anything above 55 RC it is all very hard. PVD finish I am going with has a hardness of 3300 HV. Which I am guessing is over 100RC. I can’t find a conversion table that goes that high.. this finish is only 3 microns thick. Those are the major differences when it comes to heat treat and surface finish.

When I first started researching the M4 a few years back, I honestly thought the collapsable stock looked odd. Last Feb, I came across a M1014 US flag model w fixed collapsable stock at Sportsmans warehouse. Once I started seeing the various forum member builds and comments about the middle position being right length of pull in combination w RMR and Scalerworks mount, etc etc, I've slowly been moving in that direction. Finally, I have accumulated the parts and I am all set up to switch out neutered recoil tube w the 3 position. A shout out to SD for his extensive photo essay tutorials and advice/postings from various forum members! I'll post pictures.

I bought mine because I liked the option to change the length. I am a big guy and the longest setting and middle setting work great for me. It saves a little weight I am sure too. Lets all be honest to - a lot of the reason everyone gets it is because exactly like you said: it is how a Benelli M4 SHOULD look and it just looks cool.