Sig Sauer

Sig Sauer M400 Tread 5.56 NATO 30+1 16" Stainless Steel Barrel, Concrete Cerakote Aluminum Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Synthetic Stock, Reduced Angle Grip

Item #11743978 MPN RM40016BTRDV2CON UPC 798681698233

Caliber 5.56mm NATO

Capacity 30

Barrel Length 16"

Condition New

Manufacturer

Name Sig Sauer

Phone 603-772-2302

Website http://www.sigsauer.com

Address 18 Industrial Drive , Exeter, NH 03833

Sig Sauer M400 Tread 5.56 NATO 30+1 16" Stainless Steel Barrel, Concrete Cerakote Aluminum Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Synthetic Stock, Reduced Angle Grip

The M400 TREAD features a free-floating M-LOK enhanced handguard that is lightweight yet rigid for extreme control and ease of mounting accessories such as lights and handstops. The lower receiver has an ambidextrous safety for right or left-handed operation and includes an integrated QD mount for easy sling attachment. The M400 TREAD features a stainless steel barrel offering durability and corrosion resistance while improving accuracy; 3-prong flash hider; 1:8 twist rate; mid-length gas system; SIG Matchlite 2-stage trigger; MAGPUL SL-K telescoping stock for easy adjustment and a customized fit.

Brand Sig Sauer

Category Tactical Rifles

Series Tread V2

Model M400

Caliber 5.56 NATO

Barrel Length Range 16" to 16.99"

Gun Platform AR Style

Operating System Direct Impingement

Stock Finish Group Black

Capacity 30+1

Stock Material Synthetic

Action Semi-Auto

Oal 32.50"

Hand Ambidextrous

Sights None

Barrel Finish Stainless

Barrel Material Stainless Steel

Muzzle 3 Prong Flash Hider

Twist 1:8"

Receiver Description Picatinny Rail

Grips Reduced Angle

Handguards M-LOK

Height 7.10"

Receiver Material Aluminum

Width 2.60"

Stock Description Magpul SL-K

Barrel Description Stainless Steel

Barrel Length 16"

Max Capacity 30

Receiver Finish Concrete Cerakote

Trigger Two-Stage Matchlite Duo

Weight 6.50 lbs

Stock Finish Black

The information below comes from our Gun Caliber Dictionary and is for general reference only. It does not describe the specifications of this particular item.

The 5.56X45mm NATO cartridge was designed by James Sullivan, a member of Eugene Stoner's engineering team that developed both the M16 rifle and its original cartridge. The 5.56X45mm NATO was adopted by the U.S. military in 1964 and by NATO in 1980. With bullet diameter of .224-inch, the original M193 military cartridge used a 55-grain bullet at 3250 fps; the current M855A1 cartridge, developed by FN, uses a 62.5-grain bullet at 3020 fps, offering greater range and better penetration. The civilian version of the 5.56X45mm is 223 Remington; the cartridges are dimensionally identical but military chamber dimensions and specifications for military brass are different. It is considered safe to use 223 Remington ammo in a 5.56X45MM NATO chamber, but not a good idea to use 5.56X45mm ammo in a rifle specifically chambered for the 223 Remington. Although the stopping power of .22-caliber bullets remains controversial the 5.56X45mm has served well in now multiple generations of M16 rifles. — Craig Boddington

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