Sig Sauer Rifles - M400 for sale

GI#: 103698321

Guns Listing ID: 698957Good shape overallHas some scratches on handguard Sig gripNo sights1-30rnd mag ...Click for more info

$799.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$799.99

NEW TODAY!

Sig Sauer ~ Model M400 Tread ~ 5.56 NATO

GI#: 103697410

Guns Listing ID: 541410RIFLE: SIG SAUER MODEL M400 TREAD RIFLE, SERIAL NUMBER 20L023989, CAMOUFLAGE, NOT INCLUDED, 16.00, 5.56 NATO, SEMI - AUTOMATIC Notes: RIFLE: SIG SAUER MODEL M400 TREAD RIFLE,CAM ...Click for more info

$899.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$899.99

NEW THIS WEEK!

GI#: 103695191

Excellent condition, light wear and handling marks, comes with one mag. Sig sauer semi auto AR-15 type rifle, 16" barrel with 3 prong flash hider, factory black finish, standard AR controls, sing ...Click for more info

$799.99

Seller: Cabelas La Vista

$799.99

NEW THIS WEEK!

Sig Sauer ~ M400 Tread Coil ~ 5.56mm NATO

GI#: 103693548

Sig Sauer M400 Tread Coil semiautomatic rifle chambered in 5.56x45mm NATO. 16-inch threaded barrel crafted from 416R stainless steel with custom three-prong flash hider. Comes in a factory softcase wi ...Click for more info

$799.99

Seller: Cabelas Fort Worth

$799.99

NEW THIS WEEK!

GI#: 103691455

Guns Listing ID: 696654Come with optic, off set flip up sights, angled hand grip, picattiny mountsand 3 magazines ...Click for more info

$849.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$849.99

SIG SAUER SIGM400 DH3 + SIG BUCKMASTER, ROMEO5, FEYACHI LIGHT .223 WYLDE

GI#: 103678784

Guns Listing ID: 693216This Sig Sauer rifle includes three 30-round magazines, Savior soft case, 13.2\" Tread M-LOK handguard with Sig vertical foregrip & hand stop, ambidextrous safety & magazin ...Click for more info

$1,139.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,139.99

GI#: 103678768

Guns Listing ID: 693123This M400-DH3 features an adjustable buttstock, a vertical foregrip, a flat-face trigger, a muzzle brake, a Feyachi tactical light, a Sig Sauer Romeo5 red dot sight with angle m ...Click for more info

$1,424.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,424.99

GI#: 103674663

Guns Listing ID: 691976Very good condition Sig Sauer M400! Perfect affordable AR-15 with one 30rd magazine and a Holosun HE510C-GR green dot optic. Nice addition to any collection. ...Click for more info

$1,099.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,099.99

SIG SAUER M400 FORGE 5.56X45MM NATO

GI#: 103673486

Guns Listing ID: 691255This Sig Sauer rifle includes two 30-round magazines, owner‚s manual, Magpul SL-K buttstock, and a Monstrum light with a pressure pad switch. Get the best bang for your bu ...Click for more info

$807.49

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$807.49

GI#: 103670587

Guns Listing ID: 687169The Sig Sauer M400 Forge is a 5.56 NATO rifle wrapped in a Moss Green Cerakote finish, pairing a 16\" cold hammer forged barrel and 30-round capacity with an included ROMEO ...Click for more info

$1,191.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,191.99

Sig Saur M400 AR 15 5.56 Cal

GI#: 103666173

Overview The Sig M400 stands out for its smooth-cycling mid-length gas system and highly accurate stainless steel barrel. While exceptionally well-built, it features proprietary handguards and a heav ...Click for more info

$1,299.00

Payments: Money Orders, Certified Checks, Personal Checks, Zelle, Laya...more

Shipping: $70.00

Payments: Money Orders, Certified Checks, Personal Checks, Zelle, Layaway

Shipping: $70.00

Seller: randywine

$1,299.00

SIG SAUER M400 SENTRY PACKAGE 5.56X45MM NATO

GI#: 103661379

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

$1,799.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,799.99

GI#: 103650957

Guns Listing ID: 682835This 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

$849.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$849.99

SIG SAUER M400 Forge 5.56X45MM NATO

GI#: 103650956

Guns Listing ID: 682834As 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

$849.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$849.99

GI#: 103646413

Guns Listing ID: 680740 SIG SAUER M400-FORGE is a modern 5.56 NATO rifle engineered for shooters who demand reliability, precision, and performance. Built around a 16\" cold hammer forged barrel ...Click for more info

$1,046.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,046.99

SIG SAUER RM400-16B-ROSE-R5X2 M400 ROSE KIT 5.56MM 16" W/ROSE GOLD CONTROLS

GI#: 103644257

The SIG SAUER M400 ROSE Kit (RM400-16B-ROSE-R5X2) is a 5.56 NATO semi-automatic rifle designed from the ground up for women shooters who want a feature-complete, optic-ready AR platform with c ...Click for more info

$1,399.99

Payments: credit card, bank check, money order

Shipping: $50.00

Payments: credit card, bank check, money order

Shipping: $50.00

Seller: Garys Gun Shop SD

$1,399.99

Sig Sauer~Model M400~5.56 NATO

GI#: 103631788

Fun looking Sig Sauer sporting rifle, the M400 is chambered in 5.56 NATO and has lots of places for accessories. 5.56 NATO ...Click for more info

$799.99

Seller: Cabelas Woodbury

$799.99

SIG SAUER M400 SDI XSERIES 5.56X45MM NATO

GI#: 103622326

Guns Listing ID: 683533RIFLE: SIG SAUER MODEL M400 SDI XSERIES, SERIAL NUMBER 21P021377, BLACK (MATTE), YES - INCLUDES PROTECTIVE CASE, SEMI - AUTOMATIC, 5.56 NATO, 18 ...Click for more info

$1,099.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,099.99

SIG SAUER M400 VTAC 5.56X45MM NATO

GI#: 103620199

Guns Listing ID: 669960This Sig Sauer rifle comes with one 30-round magazine, the original soft case, owner‚s manual, adjustable stock, an ambidextrous safety & magazine release, M-Lok handguard ...Click for more info

$1,424.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,424.99

SIG SAUER M400 SDI-X 7.62X51MM NATO

GI#: 103616854

Guns Listing ID: 666405The SIG Sauer M400 SDI X chambered in 5.56 NATO is a lightweight, modern sporting rifle built for reliability and performance. Featuring an M-LOK rail system for easy customizat ...Click for more info

$1,199.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,199.99

SIG Sauer ~ M400 ~ 5.56 NATO

GI#: 103608249

Guns Listing ID: 660407SIG Sauer SIGM400 Rifle Package – Stainless Barrel with Sierra3BDX 3.5–10x42 ScopeThe SIG Sauer SIGM400 delivers dependable performance and precision in a rugged, versatile plat ...Click for more info

$1,200.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,200.99

GI#: 103606328

Pre-owned SIG Sauer M400 5.56 NATO in very good condition. This police trade-in M400 features an 18-inch barrel, Magpul MOE pistol grip and stock, and a Surefire M500A handguard. The M400 is a versati ...Click for more info

$929.99

Seller: Cabelas West Chester

$929.99

GI#: 103604060

Guns Listing ID: 659352The Sig Sauer M400 TREAD comes ready for the range and ready to be customized. TREAD features a 16" stainless steel barrel with a free-floating M-LOK handguard, a single-st ...Click for more info

$1,100.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,100.99

GI#: 103602806

Guns Listing ID: 658761This Sig Sauer rifle comes with one 30-round magazine, an adjustable stock, an ambidextrous magazine release & safety, and a muzzle brake.Get the best bang for your buck when yo ...Click for more info

$949.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$949.99

SIG SAUER M400 SDI 5.56X45MM NATO

GI#: 103586473

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

$979.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$979.99

GI#: 103584778

Guns Listing ID: 652670This Sig Sauer rifle comes with one 30-round magazine, a Magpul PRS Lite stock, ambidextrous controls, and a muzzle brake.Get the best bang for your buck when you get a Certifi ...Click for more info

$1,139.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,139.99

SIG SAUER M400 TREAD V2 5.56X45MM NATO

GI#: 103582397

Guns Listing ID: 651968Gun is in Excellent conditionOverall very clean. Looks like it‚s been unfired. No scratches or marring as seen in photosComes with Savior case and 3 total mags ...Click for more info

$1,300.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,300.99

GI#: 103578753

Guns Listing ID: 660872Sig Sauer M400 Tread V2 5.56mm RifleThis rifle in in very good condition with minor scratching on the receiver.The rifle comes with a 16\" Barrel, (1)30Rd Magazine, an M-Lo ...Click for more info

$979.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$979.99

"SIG SAUER M400 RIFLE 5.56 MM (L2026-02947)

GI#: 103567781

"SN: 20C010106. Modern production, 5.56mm with a 16"" barrel w/ flash hider. Bore is bright with strong rifling. Semi-auto tactical rifle with OD green Magpul MOE furniture. Overall con ...Click for more info

$895.00

Payments: M/C, VISA, American Express and Discover

Seller: Collectors Firearms

$895.00

SIG SAUER SIGM400 VTAC 5.56X45MM NATO

GI#: 103560630

Guns Listing ID: 645992The Sig Sauer M400 is a top-tier semi-automatic rifle that has taken the firearms industry by storm. This 5.56 NATO rifle, manufactured by the renowned Sig Sauer brand, offers a ...Click for more info

$899.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$899.99

GI#: 103559352

Guns Listing ID: 5952991-30 round magazine, the original soft case, manual and a sling are included. Equipped with a BCM stock, BCM pistol grip and a 3-prong muzzle brake. Get the best bang for your b ...Click for more info

$1,196.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,196.99

GI#: 103555328

Guns Listing ID: 587906The 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

$1,009.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,009.99

USED Sig Sauer M400 DH3 556 Nato Daniel Horner 3-Gun RM400-SDI-16B-DH3

GI#: 103545301

Guns Listing ID: 640534Firearm in excellent condition. Has little to no signs of wear from use. Comes with 1 extra magazine. ...Click for more info

$809.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$809.99

GI#: 103518569

...Click for more info

$1,629.00

Payments: Visa, Mastercard, Amex, Money Order, Certified Check

Seller: GUNPRIME

$1,629.00

SIG SAUER M400 TREAD V2 TACPAC 5.56X45MM NATO

GI#: 103516259

Guns Listing ID: 639832M400 V2 TREAD TacPac includes a SIG Romeo-MSR Gen2 red dot and Savior Specialist rifle bag.The new Sig Sauer TREAD V2 offers quality features at no compromise! Built off the Sig ...Click for more info

$1,253.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,253.99

SIG Sauer SIGM400 5.56 NATO Semi-Auto 16" - 30+1, Anodized Black

GI#: 103506345

Mission-ready out of the box, the SIG Sauer SIGM400 delivers modern tactical capability. Chambered in 5.56 NATO with a 16-inch barrel, this rifle is ready to perform right out of the box. With 30+1 c ...Click for more info

$859.99

Payments: Credit Card- Visa, Mastercard, Discover, American Express

Shipping: $39.99

Payments: Credit Card- Visa, Mastercard, Discover, American Express

Shipping: $39.99

Seller: United Patriot Supply

$859.99

Used SIG SAUER 516 G2 5.56 95%

GI#: 103492427

This is a used Sig Sauer 516 G2 5.56 rifle. This rifle has a couple hundred rounds through it. Looks like new. It has a magpul ace stock and Troy aluminum forward grip. It comes with one magpul 30 rd ...Click for more info

$800.00 SALE PENDING

Payments: Credit Card (No Fees) / U.S. Postal Service Money Order / Ca...more

Shipping: $45.00

Payments: Credit Card (No Fees) / U.S. Postal Service Money Order / Cashier's Check

Shipping: $45.00

Seller: FIRST STATE

SALE PENDING $800.00

Sig Sauer ~ M400 ~ 5.56 NATO

GI#: 103481544

This Sig Sauer model M400 semi-automatic rifle is chambered in 5.56 NATO and is in good condition with some wear marks along the frame and light oxidation on the barrel. This model is known for its ve ...Click for more info

$699.99

Seller: Cabelas Sidney

$699.99

SIG SAUER M400 RIFLE 5.56X45MM NATO

GI#: 103481182

Guns Listing ID: 624220RIFLE: SIG SAUER MODEL M400 RIFLE, SERIAL NUMBER 20C065221, BLACK (MATTE), CASE NOT INCLUDED, 18, 5.56 NATO, SEMI - AUTOMATIC ...Click for more info

$799.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$799.99

SIG SAUER M400-TREAD V2 5.56X45MM NATO

GI#: 103469566

Guns Listing ID: 608250The M400-TREAD V2 extends the legacy of one of SIG SAUER’s most popular modern sporting rifles, bringing upgraded features directly inspired by user feedback. Built to raise the ...Click for more info

$1,105.99

Payments: Discover, Visa, MasterCard, American Express. Financing opti...more

Payments: Discover, Visa, MasterCard, American Express. Financing options also available.

Seller: Guns Dot Com

$1,105.99

SIG Sauer ~ SIGM400 ~ 5.56 NATO

GI#: 103448971

This SIG Sauer SIGM400 is a right-hand semi-auto rifle in 5.56 NATO Cal. The barrel is 16.5 inches long, with a flash hider. It has a metal floating handguard. The stock is a MOE SL-K adjustable stock ...Click for more info

$929.99

Seller: Cabelas Richfield

$929.99

Sig Sauer M400 Rose 556 Nato 16" Barrel W/ Romeo5 Gen II RM400-16B-ROSE-R5X2

GI#: 103367307

...Click for more info

$1,299.99

Payments: Visa, Mastercard, Amex, Money Order, Certified Check

Seller: GUNPRIME

$1,299.99

Sig Sauer M400 ROSE 5.56 NATO w/ Romeo5 Red Dot

GI#: 103332993

Condition: New Manufacture Date: 2025 Serial Number: 20L252624 SKU: RM400-16B-ROSE-R5X2 Manufacturer: Sig Sauer Model: M400 Rose Caliber: 5.56 NATO Action: Semi-auto Trigger: Sig 2- ...Click for more info

$1,369.99

Payments: We accept Visa, M/C, Discover & Amex, USPS Money Orders, Cas...more

Payments: We accept Visa, M/C, Discover & Amex, USPS Money Orders, Cash (for local pick up ...more

Seller: SGO GUN ROOM

$1,369.99