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Sig Sauer M400 Tread Coil 5.56mm NATO 16in Black Semi Automatic Modern Sporting Rifle – 30+1 Rounds

(33)
Caliber: .223 Rem/5.56×45mm NATO
Capacity: 30+1
Barrel Length: 16"
Rounds: 20

Manufacturer: Sig Sauer
Product Line: Tread
Platform: AR-15
Caliber: 5.56x45mm
Barrel Length: 16″
Twist: 1:8″
Action: Semi-Auto
Capacity: 30
Stock: Magpul SL-K
Barrel: Stainless
Rail: M-LOK
Finish: Black

The TREAD COIL sets a new standard in performance and value in the AR category. With installed accessories including ROMEO5 Red Dot Sight, 2 Stage Match Trigger, and 13″ lightweight handguard, the COIL is the perfect rifle package for the avid user or first-time buyer. Other features of the TREAD COIL include the precision 16″ stainless barrel, ambidextrous controls, and 6-position Magpul SL Stock.

M-LOK handguard with lightening cuts to reduce weight
3 chamber compensator
Ambidextrous charging handle made of aircraft grade aluminum and a dual roll pin design
ROMEO5 optic featuring a 2MOA dot with ten illumination settings, MOTAC, and 50k battery life
M-LOK front sight adapter with co-witness height made of lightweight aluminum
Multiple configurations of M-LOK grip kits made of high strength polymer
Factory upgraded flat blade, single stage trigger

Kent D

2 years ago

If I had only one AR, this would be it. The TREAD COIL is a perfect 15 that is nicely tricked out by SS. Also, it's a good excuse to get some extended mags.

Mark N.

2 years ago

I love my nw Tread Coil. Added a Juliet-3 magnifier behind the included red dot. This rifle is very accurate!

Topwater

2 years ago

Sig Sauer reputation and quality, Excellent upgrades, Romeo 5 and Enhanced trigger system. This IS THE AR you want! After more than a year delay, the Long -awaited M400 Tread Coil does not disappoint. If there were 5 in-stock, I'd buy them ALL!!

brian s.

2 years ago

This is my first in the AR platform. After looking over all my options for over a month. I finally decided on the Sig Tread Coil. It has everything one could need right out of the box. Although I added a QD sling and flip up front and rear sites. Plus an adjustable bipod. It eats anything that it is fed and have not had any FTF's. Love the flat trigger. The only thing I did to it before firing it the first time. Was to take it apart and give it a good lube. I have barely broken it in with just

DCowell17

2 years ago

I just wanted to tell a few differences between the photos and the actual coil. It has a hand stop included. Also it does not have this skeletonized trigger. It has a solid flat trigger and it's glorious. No creep. Reset is instant. I'm no expert but it's 4 lbs max brand new not broken in. Lastly there's not qd points on the either side of the rear of the receiver, just one on the back side of the receiver. Feels great. Looks great.

Raymond m.

2 years ago

My first AR so I can't compare it to much but after alot of research in-person and online I purchased this setup. Few times out and it's been very reliable. Came with plenty of nice features for the price (things I don't have to buy separately) and great platform for future upgrades. Very happy

Evan C.

1 year ago

I bought this rifle as my first gun and it came highly recommended when I was looking. I have used it for a while now and love it. Would definitely recommend this too anyone and would say it is worth the price.

Joe A.

1 year ago

AR/M400 firearm and I couldn't be happier! From the build quality to the accessories it comes with, you will not find a better AR platform for the price!

Dave C

1 year ago

Absolutely love this AR, I have had it for a while not one malfunction his shot flawlessly everything I fed it

Sean M.

1 year ago

I just got the Sig M400 Coil. I had the Sig Battle Sights Bravo 5 with a Sig Reddot on top on a different AR. I switched things up and now have this Battle Sights set up on the M400 Coil. Shot it today and got both the Scope and the Reddot rocking. I really like how this AR shoots. The Trigger is VERY good. Maybe even great. I put a Magpul bipod on it and was easily getting tight groups in just the first 20 rounds outta the gun. I really like this specific AR and this set up.

John S.

1 year ago

Added a Juliet 3 and some backup sights. Only gripe is the factory charging handle. Radian’s is what it should ship with, but I know SIG’s trying to hit a price point. When I bring guests to the range, it’s a toss-up “what’s your favorite?” Between the coil and my SIG MPX Carbine. No regrets on this purchase!0

Gregg J

1 year ago

Comes with extras you’d drop on a stock AR. I was pleasantly surprised with the Romeo red dot. Even the buttstock is similar to a Magpul I prefer that runs $80 as an upgrade. This thing is pretty from the day you pull it out of the box.

Angelo D

1 year ago

I feel I got my money's worth.I did not need to add anything to this AR.It came with everything I needed. 500 rounds, no malfunctions.This SIGis my go to long gun.

Kevin P

1 year ago

The M400 Tread is the first rifle I’ve even purchased and it’s a great one . I’m very pleased with Sig Sauer’s quality

Paul A.

1 year ago

I got the Tread COIL for $1k... no where on this planet can you get a weapon of this quality for that kind of price. HIGHLY RECOMMEND!

Tamhoang N

1 year ago

This was the very first AR15 I purchased. It is an accurate, reliable, and good-looking rifle! The only thing I have found as a drawback was not having iron sights included with this package. For a beginner rifle, I feel it should have irons along with the red dot, to be able to practice with either one. Also, to add iron sights, you'll have to get a low Picatinny mount from Sig for it to match the Picatinny rails on the receiver. I bought a Magpul Picatinny rail to install iron sights, then

Grace C.

1 year ago

Being retired military ???? I often miss going to the riffle range for training on the M16. The M400 gives me back the opportunity to keep up my skills . The weapon is so much different then the M16 that we used in the military. it has a much smooth trigger and holding it in the proper shooting position is much more comfortable . when picking it up ...Read More Read more about review stating M400

Lori C.

1 year ago

I love this gun and the process was awesome from beginning to end. I do have one question out of curiosity.The gun that I ordered was all black. The one I received was camo brown and black. I like it even better, but am just wondering about the change. I would definitely buy another in the future.

Clayton H.

1 year ago

For the price, I think you'd be hard-pressed to beat it. The small upgrades made to the M400 platform that this model includes could easily fetch a price $2-300 higher than it goes for. Fit and finish are rock-solid, the action is smooth, and every piece of the firearm feels rugged and ready to go.

Brian M.

1 year ago

I love this gun already. I got the sights zeroed in and now it stacks shots. It’s super accurate and the kick isn’t too bad at all. The grip and red dot are perfect and so is the trigger. Thanks so much guys!

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