Yet Another M1S Upper Report

[interceptor]

There shouldn't be this many people with issues regarding a certain manufacturer and item. Public forums like this one exist so that future potential buyers can know what they are getting into with a product. Knowing what I know now I would have went with a DelTon or ordered a Noveske barrel and built my own.

Even now that it is working I won't buy from M1S again.

Lemme put it this way... If you went down to your local dealership and bought a new car, got it home and it wouldn't start and then you had to go into the engine and fix some things would you have a positive report for that manufacturer, considering that it is now running but wasnt' when you bought it and should have been?

[Flewis]

Paul at M1S has my upper and is testing it right now. I've spoken to him a couple of times as he is asking if it is ok to do this or that to it. I'll have to say that I'm truly impressed with the level of customer support they have. Paul seems very interested in finding out what is going on with it.

If they make it right I'll definitely do business with them again. Every company has issues from time to time, its how they deal with them that concerns me.

I should hear something back from him this week. I'll let everyone know what I find out.

[GlockandRoll]

So, I'm confused... did the lapping fix the problem?
I've built more than a dozen M1S guns for friends and family, and have always noticed they didnt shoot very well untill broken in.

kurtz - thanks for all you wrote, it was very informative.

[Eviltwin]

Please let us know if you've heard back. I'm serious about getting a AR-15 upper in .300 Whisper / .300x221 and the price difference between M1S/J&T or SSK is pretty substantial (about the cost to get an aimpoint or eotech).

[GlockandRoll]

I'm all but giving up on the caliber... every time it makes sense in my head, I realize that it is not a mainstream round.

In the end, a 77/44 does an incredible job of putting a hurt on something 200 yards away - yet virtually silent from the shooters perspective.

[Pitt300]

I spoke w/Paul this weekend & he had someone's upper & it shot excellent.
Not sure whose it was.
Think it was someone in North Texas & think he may have even shot w/the owner of the upper & the upper was not a problem.
See if someone chimes in.
Mine just shot 3 sub 1" groups w/208 AMaxs last week.
Used 8.8, 9.0 & 9.2 g VV N110.
Didn't chrono just shooting.
For some reason my 9.4g loads went supersonic on my & it wasn't that hot outside so I backed down a little.
All 3 of these were subsonic & w/in about 1 1/2" of POI.
Hope this helps.

[Eviltwin]

Originally Posted by Pitt300

Mine just shot 3 sub 1" groups w/208 AMaxs last week.

I know you've probably posted it elsewhere but what upper do you have?

[Pitt300]

M1S w/16" Freefloat tube w/gas port in carbine position on a DPMS lower

[hugginsvilleH&A]

pitt I did my M1S with the wheeler kit , has a very nice shiny/smooth bore and the thing shoots fantastic, no problems at all. The stuff here had me spooked with the problems some are having but I would buy another M1S, when I get mo' money. The thing shoots really sweet( sub 1") I'm shooting 220SMK some over 1680 others over 4227, I'm happy with both , thanks pitt for the lead into the firelapping realm...... you tha man!

[Flewis]

Hey, sorry it has taken me so long to follow up on my M1S.

Paul at M1S wound up re-crowning the barrel and was able to shoot 1" groups with sub-sonic 220 SMKs. I think he shot good groups initially but decided to try the re-crown to see if it would bring the group size down more. He even threw in a light-weight buffer and spring in the return package.

I can't say enough about M1S's customer service... A+ in my experience.

Which brings me to the REAL REASON I was having accuracy problems with this upper. The free float tube is much shorter than the tube on my .223 varmit upper (22" barrel vs 16" barrel on the .300) and my Caldwell tackdriver rest/bag is 11" long. Anyone figure it out yet?

When shooting my varmit AR and all my other rifles I never had to worry about the barrel contacting the shooting bag. With the short free float tube on the M1S upper I was having random contact with the barrel and the gas block which was throwing my shots all over. I was surprised it made that much difference. However, when I was careful that the bag didn't touch anything but the tube my shots all landed in less than 1" groups with 220 SMKs and 208 AMaxes.

With that said, I've been working on my other .300 upper (adding an adjustable gas block) while the M1S upper was away and I don't want to switch parts over since both uppers now shoot the same. So, if anyone is interested in a decent price on a complete M1S upper let me know via PM.

edit to add: the M1S upper has been sold