Advanced Search
Order By
Sig Sauer Rifles - M400
Sig M400 16" Semi-Auto Rifle in 5.56 Nato Sig M400 Original upper and lower Sig 5.56 1:8 Stainless AR-15 Barrel and Sig Gas Block Sig 5.56 BCG Midwest Industries 15" M-Lok Handguard Sig ...Click for more info
Seller: RawhideArmory
Area Code: 469
$699.99
Guns Listing ID: 575789Sig M400 in near new condition with factory sig iron sights. Comes with one magpul magazine. ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$850.99
Guns Listing ID: 574713This rifle has barely been used and is in great condition. No signs of damage or wear. Has an added bipod/foregrip. ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$899.99
Guns Listing ID: 574665This Sig Sauer M400 features a target-type buttstock with an adjustable cheek and a threaded barrel. One 30-round magazine is included. Get the best bang for your buck when you ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,044.99
Guns Listing ID: 573409This used SIG M400 is in great condition. Includes one magazine and a hard case; light handling wear but fully functional and well maintained — a reliable AR-style platform idea ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$999.99
Guns Listing ID: 570782SIG Sauer M400 5.56 NATO Rifle – 16" Barrel – 30-Round MagThe SIG Sauer M400 delivers rock-solid reliability in a duty-ready direct-impingement platform. Chambered in 5.56 ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$770.99
Guns Listing ID: 566896For sale is a Sig Sauer SIGM400 TREAD chambered in .223/5.56 NATO, finished in an attractive gray Cerakote. This rifle features a 16-inch stainless steel barrel paired with a Mi ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$899.99
Guns Listing ID: 564711Sig Sauer M400 5.56 NATO 10+1 16\" Black Nitride Threaded Barrel, Black Anodized w/Rose Gold Controls Picatinny Rail Aluminum Receiver, M-LOK Handguard, Magpul SL Telescopi ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,338.99
Light handling marks on steel, Bore is im good condition, Lands and grooves well-defined. Interested in purchasing this firearm? Give the Post Falls, ID Cabela's a call! 208.777.6300 5.56x45mm NATO ...Click for more info
Seller: Cabelas Post Falls
Area Code: 208
$949.99
This is a Sig Sauer M400 rifle with a 16" barrel in 5.56 NATO. Overall, this rifle is in good condition with some wear. The pink camo has a couple light handling marks, and the receiver has some ...Click for more info
Seller: Cabelas Hazelwood
Area Code: 314
$729.99
Guns Listing ID: 561325Up for sale is a SIG Sauer M400, chambered in 5.56 NATO / .223 Rem, in excellent, lightly used condition. The M400 series is SIG’s take on the proven AR-15 platform, offering pr ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$899.99
This firearm comes with 1 magazine and a soft case. 5.56 NATO ...Click for more info
Seller: Bass Pro - Las Vegas
Area Code: 702
$899.99
"Semi-Automatic Tactical Rifle with a 16"" Barrel. Anodized Finish, Magpul SL Stock, Sig Flatblade Match Trigger, Mid-Length Gas System, And Full Ambidextrous Controls. Includes 1-30rd ...Click for more info
Seller: Collectors Firearms
Area Code: 832
$1,499.95
NEW IN STOCK  Sig M400 Tread AR-15 Rifle RM40016BTRD, 223 Remington/5.56 NATO, 16.5", Magpul SLK Black Stock, Black Finish, 30 Rds Model: M400 TREAD Caliber: 5.56mm NATO Barrel Le ...Click for more info
Seller: DOMINIONOUTDOORS
Area Code: 540
$849.99
Seller: Cabelas Rogers AR
Area Code: 479
$799.99
Guns Listing ID: 554574SIG SAUER M 400Purchase with confidence today!!This firearm is in very good condition!This firearm does show signs of very light usage with very light scratches on both sides of ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$899.99
Guns Listing ID: 546710CPJ014077 (JDI) Featuring a lightweight and rigid free-floating M-LOK® enhanced handguard, the SIG SAUER® M400 Tread V2 Semi-Auto Rifle provides exceptional control and lets you ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,650.99
Guns Listing ID: 541410This Firearm is in very good condition with a nice green camoflage. The firearm comes with a magpul Bi-Pod and foregrip. ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$949.99
GI#: 103165395
Sig M400 in 556 with a 16" barrel, quad rail, ambi safety. Rifle is lightly used in very good condition. Comes with 1 mag, no box.  *Legendary Guns in Phoenix AZ 602-242-1195 Hours of ...Click for more info
Seller: Legendary Guns
Area Code: 602
$699.00
Guns Listing ID: 531388THIS BEAUTIFUL USED SIG M400 5.56 COMES WITH A $900 AIM POINT RED DOT ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,299.99
Guns Listing ID: 108017The M400 TREAD is easily customizable with a full line of purpose-built accessories, designed and built in the USA. The TREAD is an aluminum frame rifle, that is optics ready, T ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$879.99
Guns Listing ID: 528050As you can see from the photo‚s this Sig Sauer is in good condition. It has an upgraded rear sight with two apertures and can also adjust up and down.So, you can buy with ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$899.99
Guns Listing ID: 525115The rifle is in overall excellent condition. There is minor amounts of blemishing such as small amounts of wear on the edges of the metals. Otherwise the rifle still looks great ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$724.99
Guns Listing ID: 522155USED IN GOOD CONDITION WITH SIG ROMEO 5 OPTICS ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$859.99
GI#: 103089584
Guns Listing ID: 514846The SIG Sauer M400 is an affordable high-quality AR-15 that is direct impingement gas-operated and chambered in 5.56x45mm (5.56 NATO). It features a rotating locking bolt a corr ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,000.99
Guns Listing ID: 511952Sig Sauer M400 Sentry Package 5.56 NATO 30+1 16\" Threaded Barrel, Black Anodized Picatinny Rail Alloy Steel Receiver, M-LOK Handguard, 6 Pos Magpul SL Black Stock, Reduced ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,749.99
After two full years of competitive shooting with SIG SAUER'S SDI Comp Rifle, Team SIG's Daniel Horner has refined the platform to meet his competition needs and developed the ultimate 3-Gun rifle, th ...Click for more info
Seller: HighbyOutdoors
Area Code: 308
$1,699.99
Guns Listing ID: 509498This Sig Sauer M 400 is in very good condition as you can see from the listing photos with light wear from little use. This AR style rifle comes with one magazine and a Firefie ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$979.99
Guns Listing ID: 493624The M400 ROSE was developed in collaboration with World Champion Lena Miculek at the request of the ROSE community to help encourage and inspire women to take on the responsibil ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,382.99
Guns Listing ID: 508135This Sig Sauer Sig516 features a telescoping buttstock, flip-up front and rear iron sights, an ambidextrous mag release, an ambidextrous safety, an A2 muzzle brake, a 2-point QD ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,424.99
The Sig Sauer M400 Tread is a feature-rich AR-15 style rifle chambered in 5.56 NATO, offering reliability and adaptability straight from the factory. Its 16 inch stainless steel barrel is precision-ma ...Click for more info
Seller: United Patriot Supply
Area Code: 785
$849.99
Sig Sauer Model M400 AR-15 Rifle .223 / 5.56 NATO calibers As new unfired condition No box Magpul furniture 6 position collapsible stock 16" barrel A2 profile (has bayonet lug&# ...Click for more info
Seller: Elephant & Castle Fine Arms
Area Code: 417
$1,395.00
Up for sale is a Sig Sauer M400 chambered in 5.56x45mm. 16" Barrel, very good bore.  ...Click for more info
Seller: DENVER GUN ROOM
Area Code: 303
$1,000.00
Guns Listing ID: 479651I have a used Sig Sauer M400 Classic for sale. This rifle features a flat top receiver and an adjustable butt stock. This rifle, chambered in 5.56, will ship with a 30 round mag ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$782.99
Guns Listing ID: 230626This Sig Sauer custom M400 Tread is perfect for target shooting. This rifle is chambered in .223 Rem/5.56 NATO, has a 16-inch barrel, and comes with one 30-round magazine. Finis ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,150.99
Guns Listing ID: 488221Sig Sauer M400 SDI-X 5.56 NATO 30+1 16\" Black Threaded Barrel, Moss Green Cerakote Picatinny Rail Aluminum Receiver, M-LOK Handguard, 6 Position Magpul SL Black Synthetic ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,599.99
Guns Listing ID: 487789Sig Sauer M400 SDI-X 5.56 NATO 30+1 16\" Black Threaded Barrel, Flat Dark Earth Cerakote Picatinny Rail Aluminum Receiver, M-LOK Handguard, 6 Position Magpul SL Black Synth ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,599.99
Guns Listing ID: 397155The M400 TREAD V2 features an upgraded handguard with more M-LOK slots for added mounting space and improved barrel cooling properties along with a minimalist design aimed at gi ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,195.99
MANUFACTURER: SIG SAUER FAMILY: SIGM400 Series MODEL: M400 Tread TYPE: Rifle ACTION: Semi-Auto CALIBER/GAUGE: 223 Rem | 5.56 NATO FINISH: Black FINI ...Click for more info
Seller: DOMINIONOUTDOORSKY
Area Code: 606
$950.00
Guns Listing ID: 346396The 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. ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$950.99
Guns Listing ID: 46208The M400 Tread features a free-floating M-LOK handguard, Magpul SL-K 6-position telescoping stock, single stage trigger, 16\" stainless steel barrel, and a 7075 T-6 aluminum ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$885.99
Guns Listing ID: 357389The 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. ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$997.99
Guns Listing ID: 222488After two full years of competitive shooting with SIG SAUER‚S SDI Comp Rifle, Team SIG‚s Daniel Horner has refined the platform to meet his competition needs and dev ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,999.99
Guns Listing ID: 247298Designed specifically for predator hunting and inclusive of feature changes to suit the needs of hunters. The M400 TREAD PREDATOR is an aluminum frame rifle, with a Cerakote Eli ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,207.99
Guns Listing ID: 245886The M400 X-series features a free-floating M-LOK handguard, Magpul SL-K 6-position telescoping stock, Sig Flat Match Grade trigger, 16\" Chrome Moly barrel, and a 7075 T-6 ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$1,499.99
Guns Listing ID: 135919SIG SAUER is pleased to announce the expansion of the M400 TREAD series of rifles with the introduction of the M400 TREAD PREDATOR, designed specifically for predator hunting an ...Click for more info
Seller: Guns Dot Com
Area Code: 866
$999.99
Guns International Advertising Policy
GunsInternational.com is the #1 Gun Classified website that brings gun buyers and gun brokers or sellers together through classified advertising of guns, gun related items and services for sale online. If you are looking to buy guns online or sell guns online, you have come to the right place. GunsInternational.com gun classifieds currently have over 200,000 guns for sale online by numerous dealers and collectors alike. Guns International makes no representation or warranty as to the accuracy of the information contained in the gun classifieds, gun parts or gun services classifieds listings. Buyers and sellers are required to know and comply with all applicable local, state, federal and international firearm laws.