SIG SAUER M400 SDI-X - 5.56 NATO 30+1 16" Black Threaded Barrel, Flat

Price History
SIG SAUER M400 SDI-X - 5.56 NATO 30+1 16" Black Threaded Barrel, Flat

UPC 798681714469 from 72 retailers

  • 5.56x45mm
  • Sig Sauer
Shipping:
SIGM400 SDI, 5.56 NATO, RIFLE, 16 IN, X RIFLE, FDE, SEMI, TELE STOCK, AL MLOK HG, (1) 30RD MAG
Email for Price Shipping $20
$1,450.80 DK Gun & Dog ★★★★★ (56)
SIG SAUER M400 SDI X 5.56 NATO 16 in 30rd
$1,548.45 Ferrari Firearms

UPC 798681714469 Price Graph

Today's low is $1,450.80, 9% below the 180-day average low of $1,593.43. Over the last 180 days, the lowest price peaked at $1,599.99 on September 2, 2026 and bottomed at $1,450.80 on September 6, 2026.

SIG M400 SDI 556NATO 16" 30RD FDE
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$1,599.99 Garrison's Guns ★★★★★ (21)
M400 SDI XSERIES 5.56X45 NATO 16'' BBL (1)30RD MAG FDE
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$1,599.99 Timber Hole Outdoors ★★★★★ (5)
Sig Sauer M400 SDI 5.56 NATO 16" 30+1 Flat Dark Earth Semi-Auto Rifle
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$1,599.99 Shooting Surplus ★★★★★ (193)
Sig Sauer M400 SDI 5.56 NATO 16in 30rd M-LOK
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$1,599.99 Axolotl Arms ★★★★★ (126)
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
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$1,599.99 Nadir Solutions ★★★★★ (18)
SIG M400 SDI 5.56 16 XSERIES FDE TELE MLOK 30
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$1,599.99 Canoe Creek Armory ★★★★★ (17)
SIG SAUER M400 SDI FDE 5.56 RIFLE, 16" W/ RAIL, MAGPL STOCK, FLATBLDE TRIGGER
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$1,599.99 Life2A ★★★★★ (3)
SIG M400 SDI 556NATO 16" 30RD FDE
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$1,599.99 Caliber Exchange ★★★★★ (1)

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Sig Sauer M400 SDI X 5.56 NATO 16" 30rd FDE
Free Shipping $15 Off Orders Over $75 Code CALIBERKING
$1,599.99 Brickhouse Firearms
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
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$1,599.99 Kinetic Armory ★★★★★ (3)
SIG Sauer M400 SDI Rifle, 5.56 NATO, 16-Inch Barrel, FDE, 30-Round
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$1,599.99 Deerford Defense
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
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$1,599.99 Safe Haven Defense
SIG RM400SDI16BFDE M400 SDI 556 16 FDE
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$1,599.99 Conkey's Outdoors ★★★★★ (175)
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
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$1,599.99 Riddle Firearms
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
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$1,599.99 Dave's Guns ★★★★★ (28)
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
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$1,599.99 Cummings Family Firearms ★★★★★ (52)
Sig Sauer M400 SDI AR 16" 5.56 NATO 30rd - Flat Dark Earth
.223 Remington
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$1,599.99 Skid Tactical ★★★★★ (63)
SIG M400 SDI 5.56 16 XSERIES FDE TELE MLOK 30
Free Shipping CC Fee 3% $10 Off Code CALIBERKING
$1,599.99 Armed in Michigan ★★★★★ (714)
SIG M400 SDI 556NATO 16" 30RD FDE
Free Shipping CC Fee 3%
$1,599.99 Bunker Hill Ballistics ★★★★★ (9)
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
Free Shipping CC Fee 3%
$1,599.99 Minutemen Defense ★★★★★ (54)
Sig Sauer M400 SDI X 5.56 NATO 16in AR-15 Rifle FDE, 30 Round
Shipping $10
$1,599.99 Alexander's Store ★★★★★ (1,532)
SIG RM400SDI16BFDE M400 SDI 556 16 FDE
Shipping $11
$1,599.99 Selway Armory ★★★★★ (186)
SIG RM400SDI16BFDE M400 SDI 556 16 FDE
Shipping $15
$1,599.99 Extreme Products ★★★★★ (83)
Sig Sauer M400 SDI X 5.56 NATO 16" FDE Rifle
Shipping $15
$1,599.99 AZ Arms Depot ★★★★★ (229)
SIG Sauer M400 SDI XSeries 5.56mm Rifle with 16 Inch Barrel in Flat Dark Earth
Shipping $16
$1,599.99 Caliber Depot ★★★★★ (6)
SIG M400 SDI 5.56 16 XSERIES FDE TELE MLOK 30
Shipping $16
$1,599.99 Riflenetics ★★★★★ (65)
Sig Sauer RM400SDI16BFDE M400 SDI 556 FDE Tele
Shipping $18
$1,599.99 Classic Firearms ★★★★★ (2,454)
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
Shipping $18
$1,599.99 Sharp's Shooting Supply ★★★★★ (34)
SIG M400 SDI 556NATO 16" 30RD FDE
Shipping $20
$1,599.99 Custom Creatives Group ★★★★★ (24)
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
Shipping $20
$1,599.99 JB Armament ★★★★★ (126)
SIG M400 SDI 556NATO 16" 30RD FDE
Shipping $25 $25 Off Orders Over $200 Code LOCKNLOAD25
$1,599.99 Scottsodg.com
SIG M400 SDI 5.56mm 16" Rifle FDE
$5 Off - Use Code CALIBERKING
$1,599.99 Gun Place ★★★★★ (206)
SIG M400 SDI 556NATO 16" 30RD FDE
$1,599.99 Big Bee Bee ★★★★★ (11)
SIG M400 SDI 556NATO 16" 30RD FDE
$1,599.99 MCM Tactical ★★★★★ (60)
M400 SDI XSERIES 5.56X45 NATO 16'' BBL (1)30RD MAG FDE
$1,599.99 Allied Arms ★★★★★ (310)
SIG SAUER M400 SDI 5.56 NATO 16-inch FDE
$1,599.99 Georgia Guns & Ammo ★★★★★ (2)
SIG M400 SDI 556NATO 16" 30RD FDE
$1,599.99 Pickett's Mill Armory ★★★★★ (26)
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
$1,599.99 Get Guns N Ammo
SIG M400 SDI 5.56 16 XSERIES FDE TELE MLOK 30
$1,599.99 Black Bayou Armory ★★★★★ (83)
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
$1,599.99 WTW Arms ★★★★★ (68)
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
$1,599.99 Birmingham Hill Armory ★★★★★ (16)
SIGM400 SDI, 5.56 NATO, RIFLE, 16 IN, X RIFLE, FDE, SEMI, TELE STOCK, AL MLOK HG, (1) 30RD MAG
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$1,599.99 Gun Wise
SIG RM400SDI16BFDE M400 SDI 556 16 FDE TELE
$1,599.99 CLB Guns ★★★★★ (45)
Sig M400 Sdi 556NATO 16" 30RD FDE
$1,599.99 Shiner Tactical ★★★★★ (6)
Sig Sauer M400 5.56 NATO Semi-Auto 16" 30rd Rifle, FDE - RM400-SDI-16B-FDE
$1,599.99 Palmetto State Armory ★★★★★ (1,164)
SIG M400 SDI X 5.56 NATO 16" - M-PUL STOCK 30RD FDE
$1,599.99 Pathfinder Militaria ★★★★★ (106)
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
$1,599.99 Patriotic Firearms
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
$1,599.99 Armored Boar Gunworks ★★★★★ (53)
SIG M400 SDI 5.56 16 XSERIES FDE TELE MLOK 30
$1,599.99 Highland Arms ★★★★★ (49)
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
$1,599.99 EK Tactical ★★★★★ (10)
SIG RM400SDI16BFDE M400 SDI 556 16 FDE
$1,599.99 Tungsten Creek Tactical
SIG M400 SDI 5.56 NATO 16" AR Rifle FDE MLOK
$1,599.99 Good 4 Guns ★★★★★ (276)
Sig Sauer M400 SDI XSeries 556 Nato 16" Barrel FDE RM400-SDI-16B-FDE
$1,599.99 GunPrime ★★★★★ (2,495)
SIG M400 SDI 5.56 16 XSERIES FDE TELE MLOK 30
CC Fee 3%
$1,599.99 Cornerstone Arms ★★★★★ (373)
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel MLOK Handguard FDE Finish
CC Fee 6%
$1,599.99 All Things Firearm ★★★★★ (3)
SIG M400 SDI 556NATO 16" 30RD FDE
Shipping $20
$1,618.20 Down Range Firearms ★★★★★ (8)
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
$1,624.99 Precision Gunworks
SIG 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 Synthetic Stock, Reduced Angle Grip, Ambidextrous The M400-SDI X was designed to meet the highest standa...
Shipping $20
$1,652.99 Guns.com ★★★★★ (38,455)
Sig Sauer M400 SDI X 5.56 16" MLOK Tele Stk FDE 30rd
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$1,653.99 BuyAGun ★★★★★ (3)
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
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$1,655.87 Lightning Strike Arms ★★★★★ (32)
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
$1,656.99 2 If By Sea Tactical ★★★★★ (135)
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
$1,671.72 Redsand Tactical
SIG SAUER M400 SDI 5.56MM 16" FDE 30+1
$1,674.00 Firearms Express
Sig Sauer M400-SDi XSeries 798681714469 5.56 mm NATO
$1,678.99 C-ME Firearms
Sig Sauer M400-SDi XSeries 798681714469 5.56 mm NATO
$1,684.99 Denver Bullets ★★★★★ (95)
SIG M400 SDI 5.56 16 XSERIES FDE TELE MLOK 30
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$1,699.99 Timberlake Firearms ★★★★★ (11)
SIG M400 SDI 556NATO 16" 30RD FDE
$1,796.99 Coastal Firearms
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel MLOK Handguard FDE Finish
$1,797.99 Apocalypse Outfitters ★★★★★ (4)
SIG M400 SDI X 5.56 NATO 16" - M-PUL STOCK 30RD FDE
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$1,800.49 Freedom Firearms ★★★★★ (2)
Sig Sauer SIGM400 SDI X Rifle 5.56mm 30rd Magazine(1) 16' Threaded Barrel M-LOK Handguard FDE Finish
$1,901.44 Bulletproof Outfitters ★★★★★ (133)

UPC 798681714469 Price Graph

Today's low is $1,450.80, 9% below the 180-day average low of $1,593.43. Over the last 180 days, the lowest price peaked at $1,599.99 on September 2, 2026 and bottomed at $1,450.80 on September 6, 2026.

Daily Deals Email

Products at their 90-day low price.

Unsubscribe anytime with one click.

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