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Sig Sauer M400 Enhanced Patrol w/ Romeo4 Red Dot & Bag - 16" 5.56mm NATO

Sig Sauer M400 Enhanced Patrol, 5.56mm NATO, 16" BBL, 30rd w/ Romeo4A Red Dot Sight and Sig deployment bag.
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Sig Sauer

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THE SIGM400 SERIES ENHANCED RIFLE, is designed for use in law enforcement, military operations, the sporting field, as well as competitive shooting. The SIGM400 is a true AR platform tactical rifle with unparalleled accuracy. A 16” Nitride treated barrel provides superior corrosion resistance, and a 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability that users come to expect from SIG SAUER. This black version with black polymer Magpul MOE forend, grip and collapsible stock.

Please note that SIG may ship either a TAN or BLACK rifle bag. It seems to be random and we cannot guarantee which color you will receive!

Specifications are subject to change.

Specs - More Info
Additional Info
Caliber .223 / 5.56
Manufacturer Sig Sauer
Sights (detailed) Romeo4A Red Dot
Frame Finish Black
Barrel Length (in) 16.0 in
Mag Capacity / Rounds 30rd
Number of Mags 1
Accessory Rail Yes
FFL Requirements All firearms must be shipped to a Federal Firearms License (FFL) holder. We cannot and will not ship firearms to anyone but a FFL. We must receive the receiving dealer's FFL by fax (314-558-8429) or email (
Warranty Warranty provided by Sig Sauer. Warranty information is available for Sig Sauer products at
Customer Reviews (4)
love it
Can not beat this price ,case is a very nice addition , quick shipping Thank You Review by jeff (Posted on 5/12/2019)
Fantastic rifle
I am a Sig fan. I have a 226, and a 1911. Both are Sigs. This rifle quality is just as I expected. The Romeo 4b is excellent. After sighting it in, it's dead on at 50 yards. Review by Jurist (Posted on 4/11/2017)
I purchased this from Osage at a fantastic price. The fit, finish, and overall quality is apparent the moment to pick up this rifle. My first trip to the range was to sight in the red dot, and the back up iron sights. Neither process took long. After 10 mins., I was shooting one inch groups from 50 yards. One cannot beat this package deal. Thank you Osage. Review by jurist (Posted on 3/29/2017)
Nice shooting weapon,red dot is very nice&highquality (ppl say it's pretty much a Holosun red dot,I disagree) would have been nice if it included a sling w/QD. Review by Superman691 (Posted on 1/15/2017)
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