About a month ago i purchased an Sig Sauer M400 AR15. Over that past month I have shot this gun a lot. Every time that I go to the range that gun is with me. I have put almost 1500 rounds through it by now and have not had one malfunction. It is a dream to shoot.
It has everything you could want in a rifle including a decent price. It is dependable and easy to take apart and clean. I would recommend this gun to any one that is looking to buy their first black gun. This gun is built to last and take a beating in the process. I know you may think that Sig just make handguns but they also make great rifles too.
I could not be happier with mine and did not have to spend a lot of money to get it. You can put what ever you want on this gun. It looks good works great and I love it. So if you see one try it out I know you wont be sorry if you do.
From Sig Sauer:
THE SIG M400 SERIES TACTICAL RIFLE, designed for use in law enforcement, military operations, or the sporting field as well as competitive shooting. The SIG M400 is a true AR platform tactical rifle. Provides unparalleled accuracy, with a 16″ chrome-lined and phosphate coated barrel that provides maximum durability and corrosion resistance. A 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability.
Features
– Direct impingement gas operating system with rotating locking bolt
– 5.56 x 45 mm NATO Chrome-lined barrels with phosphate finish
– Accepts most M16 type magazines
– M16A2 Type flash supressor
– “F” marked fixed front sight
– Detachable carry handle M16A3 type rear sight
By: ben dismer
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I recently bought a sig Sauer M400 tried open sights Romeo 3 red dot Nikon 3X9 The best group I could get at 100 yards was 6.5 5 shot group 1 time every thing else was worse 62 green factory ammo. All sig wants to do is give me a run around. I am taking it back to the dealer that I bought it from at least they are trying to help me
Rick, wasn’t my article but I have a couple of sigs, both are excellent. A few points that may help you.
Ammo: You didnt say what you were shooting. Get some Federal Premium, Hornady or Blackhills. THEN you’ll have removed ammo as the likely cause.
Sight: you mentioned 3 kinds…as far as irons go..when my eyes went to hell I didnt know it…till you put on glasses the first time. So could be your own eyes…
Red Dot: depending on the size of the dot and style of target it can be hard to shoot good groups because you cover the target with big dot…try a round target that you can fit the dot into and still see some target around it. Also turn down the brightness till you can barely see it, makes it smaller looking and easier to aim more precisely than 100% bright does.
Scope: you cant rule out a bad scope OR improper mounting….I’ve had both happen. Try a known good scope and make sure you torqued the bolts down right. I forgot once and had me perplexed for days…it was tight enough to feel ok to my hand but WAY under torqued….Hope something helped. The Sigs are good weapons, I wouldn’t condemn one until I had that stuff totally ruled out.
Sig only has moa 4 in at 100 with brandy match grade 55 gr8. It just makes it they say it’s with in spec. The first one would not even hit 1 foot group the shop I bought it from put a new upper on it. Because sig gave us both a smoke screen and wouldn’t do any thing. Also it has a new Nikon 3×9 on it
I have been really interested in this weapon for a while now, I know sig is quality otherwise SEALs wouldn’t trust their lives to,them (p226), but I have yet to see anyone give an accuracy report for the m400. I for one would love too see how well the,1:7 twist prints down range.
I’m new to the AR market and was having a difficult time deciding on which one to purchase, until I saw the Sig. I have to admit I purchased the M400 based on my experience with their hand guns and for the most part I am very happy with my decision. I was however rather disappointed with the accuracy of the weapon and spent a lot of hours trying to improve the 2” grouping I was getting at 100 yards using 223 55gr federal ammunition.
I’m an avid reloader so I armed myself with several rounds of different powders at various weights but staying with the 55gr bullets, with little success. Then I tried the federal 5.56 62gr NATO round with vast improvement. Apparently the 1:7 twist likes the heaver bullet at the higher pressure of the 5.56 cartridge. Those 2” groups turned into .25” and smaller, much more to my liking.
As far as the weapon itself, it is a Sig through and through. Items such as the ambidextrous mag release and the tensioning screw which keeps the upper and lower half tight are things you won’t find on other weapons. I did however change the trigger group to a Geissele SSA Enhanced trigger set which if you’re using it for hunting is a must reducing the trigger pull from 8lbs to 4.5lbs.