Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16" Black FNC

Price History
Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16" Black FNC

UPC 798681664634 from 74 retailers

  • 5.56x45mm
  • Sig Sauer
Shipping:
SIGM400 SDI, 5.56 NATO, RIFLE, 16 IN, X RIFLE, BLK, SEMI, TELE STOCK, AL MLOK HG, (1) 30RD MAG
Email for Price Shipping $20
$1,359.28 DK Gun & Dog ★★★★★ (56)
Sig Sauer M400 SDI X-Series 5.56 NATO, 16-inch M-LOK
$1,450.77 Ferrari Firearms

UPC 798681664634 Price Graph

Today's low is $1,359.28, 7% below the 180-day average low of $1,461.93. Over the last 180 days, the lowest price peaked at $1,499.99 on July 20, 2026 and bottomed at $1,359.28 on September 6, 2026.

SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
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$1,499.99 Life2A ★★★★★ (3)
SIG M400 XSERIES 556NATO 16" 30RD
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$1,499.99 Caliber Exchange ★★★★★ (1)
Sig Sauer M400 SDI Semi Automatic Rifle 5.56x45mm NATO 16" Black Threaded Barrel Anodized Black Frame Black Pistol Grip
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$1,499.99 Midway USA ★★★★★ (119)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
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$1,499.99 Safe Haven Defense
Sig Sauer M400 X-Series 5.56 NATO 16 Inch 30 Rounds Anodized Semi-Automatic
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$1,499.99 Shooting Surplus ★★★★★ (193)
Sig Sauer M400 SDI X-Series 5.56 NATO 16in M-LOK 30rd
Free Shipping $15 Off Orders Over $75 Code CALIBERKING
$1,499.99 Brickhouse Firearms
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
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$1,499.99 Kinetic Armory ★★★★★ (3)
SIG Sauer M400 SDI Rifle, 5.56 NATO, 16-Inch Barrel, Black, 30-Round
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$1,499.99 Deerford Defense

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SIG SAUER M400SDI RIA 5.56 NATO 16IN BBL ORC X SERIES BLK TELE STK MLOK HG 30RD MAG
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$1,499.99 Dave's Guns ★★★★★ (28)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
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$1,499.99 Nadir Solutions ★★★★★ (18)
SIG SAUER M400SDI RIA 5.56 NATO 16IN BBL ORC X SERIES BLK TELE STK MLOK HG 30RD MAG
Free Shipping
$1,499.99 Riddle Firearms
Sig Sauer M400 XSERIES AR 16" 223 Remington 556NATO 30 Rounds - Black
.223 Remington
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$1,499.99 Skid Tactical ★★★★★ (63)
SIG SAUER M400 X SERIES 5.56 RIFLE, 16" W/ RAIL, MAGPL STOCK, FLATBLDE TRIGGER
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$1,499.99 Garrison's Guns ★★★★★ (21)
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
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$1,499.99 Conkey's Outdoors ★★★★★ (175)
Sig Sauer M400 SDI X-Series 5.56 16in 30rd
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$1,499.99 Axolotl Arms ★★★★★ (126)
Sig Saur M400 SDI X-Series Rifle 5.56mm 30/rd Magazine 16" Barrel Black Magpul Stock
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$1,499.99 Canoe Creek Armory ★★★★★ (17)
SIG M400 SDI 5.56 16 XSERIES BLK TELE MLOK 30
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$1,499.99 Cummings Family Firearms ★★★★★ (52)
M400 SDI XSERIES 5.56X45 NATO 16'' BBL (1)30RD MAG BLACK
Free Shipping
$1,499.99 Timber Hole Outdoors ★★★★★ (5)
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
Free Shipping CC Fee 3% $10 Off Code CALIBERKING
$1,499.99 Armed in Michigan ★★★★★ (714)
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
Free Shipping CC Fee 3%
$1,499.99 Bunker Hill Ballistics ★★★★★ (9)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
Free Shipping CC Fee 3%
$1,499.99 Minutemen Defense ★★★★★ (54)
SIG Sauer M400 SDI X-Series 5.56 NATO 16in AR-15 Rifle, 30 Round
Shipping $10
$1,499.99 Alexander's Store ★★★★★ (1,532)
Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16" Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15" M-LOK Handguard, Synthetic Mag
Shipping $11
$1,499.99 Selway Armory ★★★★★ (186)
Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16" Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15" M-LOK Handguard, Synthetic Magpul SL-K Stock, Black Polymer Grip
Shipping $15
$1,499.99 Extreme Products ★★★★★ (83)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
Shipping $15
$1,499.99 AZ Arms Depot ★★★★★ (229)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
Shipping $16
$1,499.99 Riflenetics ★★★★★ (65)
Sig Sauer RM400SDI16BP M400 X-Series 16" 30+1, Black, Magpul SL-K Stock, OEM Polymer Grip, Flat Match Trigger
Shipping $18
$1,499.99 Classic Firearms ★★★★★ (2,454)
Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16" Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15" M-LOK Handguard, Synthetic Magpul SL-K Stock, Black Polymer Grip
Shipping $18
$1,499.99 Sharp's Shooting Supply ★★★★★ (34)
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
Shipping $18
$1,499.99 Blackbox Ballistics ★★★★★ (2)
Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16" Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15" M-LOK Handguard, Synthetic Magpul SL-K Stock, Black Polymer Grip
Shipping $20
$1,499.99 Custom Creatives Group ★★★★★ (24)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
Shipping $20
$1,499.99 JB Armament ★★★★★ (126)
SIG SAUER M400 X SERIES 5.56 RIFLE, 16" W/ RAIL, MAGPL STOCK, FLATBLDE TRIGGER
Shipping $25 $25 Off Orders Over $200 Code LOCKNLOAD25
$1,499.99 Scottsodg.com
SIG M400 SDI X 5.56 NATO 16" Rifle with M-LOK Handguard, 30-Round Magazine, Black Tele Stock 798681664634
$5 Off - Use Code CALIBERKING
$1,499.99 Gun Place ★★★★★ (206)
M400 SDI X 5.56 16" MLOK Tele Stk Blk 30rd
$1,499.99 Armored Boar Gunworks ★★★★★ (53)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
$1,499.99 Black Bayou Armory ★★★★★ (83)
Sig Saur M400 SDI X-Series Rifle 5.56mm 30/rd Magazine 16" Barrel Black Magpul Stock
$1,499.99 Pickett's Mill Armory ★★★★★ (26)
SIGM400 SDI, 5.56 NATO, RIFLE, 16 IN, X RIFLE, BLK, SEMI, TELE STOCK, AL MLOK HG, (1) 30RD MAG
Add to Cart for Price
$1,499.99 Gun Wise
SIG M400 SDI 5.56 16 XSERIES BLK TELE MLOK 30
$1,499.99 Tungsten Creek Tactical
Sig Sauer M400 5.56 NATO Semi-Auto Rifle 16" 30rd, Black - RM400-SDI-16B-P
$1,499.99 Palmetto State Armory ★★★★★ (1,164)
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
$1,499.99 Pathfinder Militaria ★★★★★ (106)
SIG M400 XSERIES 556NATO 16" 30RD
$1,499.99 Get Guns N Ammo
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
$1,499.99 EK Tactical ★★★★★ (10)
Sig Saur M400 SDI X-Series Rifle 5.56mm 30/rd Magazine 16" Barrel Black Magpul Stock
$1,499.99 Patriotic Firearms
Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16" Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15" M-LOK Handguard, Synthetic Magpul SL-K Stock, Black Polymer Grip
$1,499.99 CLB Guns ★★★★★ (45)
SIG M400 SDI 5.56 16 XSERIES BLK TELE MLOK 30
$1,499.99 Highland Arms ★★★★★ (49)
M400 SDI XSERIES 5.56X45 NATO 16'' BBL (1)30RD MAG BLACK
$1,499.99 Allied Arms ★★★★★ (310)
SIG SAUER M400 X SERIES 5.56 RIFLE, 16" W/ RAIL, MAGPL STOCK, FLATBLDE TRIGGER
$1,499.99 Big Bee Bee ★★★★★ (11)
SIG SAUER M400 X SERIES 5.56 RIFLE, 16" W/ RAIL, MAGPL STOCK, FLATBLDE TRIGGER
$1,499.99 Birmingham Hill Armory ★★★★★ (16)
Sig Sauer M400 SDI 5.56 NATO XSeries Rifle
$1,499.99 Good 4 Guns ★★★★★ (276)
SIG M400 XSERIES 556NATO 16" 30RD
$1,499.99 MCM Tactical ★★★★★ (60)
Sig Sauer M400 SDI X-Series 5.56 NATO 16" 30rd
$1,499.99 Georgia Guns & Ammo ★★★★★ (2)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
$1,499.99 WTW Arms ★★★★★ (68)
SIG SAUER M400 XSERIES 16" 5.56 SDI
$1,499.99 De Leon RX & Sporting Goods ★★★★★ (216)
Sig M400 Sdi 5.56 16 Xseries BLK Tele Mlok 30
$1,499.99 Shiner Tactical ★★★★★ (6)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
CC Fee 3%
$1,499.99 Cornerstone Arms ★★★★★ (373)
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
CC Fee 6%
$1,499.99 All Things Firearm ★★★★★ (3)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
$1,508.00 Third Shift
SIG SAUER M400 X SERIES 5.56 RIFLE, 16" W/ RAIL, MAGPL STOCK, FLATBLDE TRIGGER
Shipping $20
$1,516.12 Down Range Firearms ★★★★★ (8)
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
$1,521.99 Precision Gunworks
Sig Sauer M400 SDI X 5.56 16" MLOK Tele Stk Blk 30rd
Free Shipping
$1,548.99 BuyAGun ★★★★★ (3)
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
Free Shipping
$1,551.44 Lightning Strike Arms ★★★★★ (32)
SIG M400 SDI 5.56 16 XSERIES BLK TELE MLOK 30
$1,552.99 2 If By Sea Tactical ★★★★★ (135)
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
$1,565.70 Redsand Tactical
SIG SAUER M400 SDI 5.56MM 16" BLK 30+1
$1,568.40 Firearms Express
Sig Sauer M400-SDi XSeries 798681664634 5.56 mm NATO
$1,572.99 C-ME Firearms
Sig Sauer M400-SDi XSeries 798681664634 5.56 mm NATO
$1,578.99 Denver Bullets ★★★★★ (95)
SIG M400 SDI 5.56 16 XSERIES BLK TELE MLOK 30
Free Shipping
$1,592.99 Timberlake Firearms ★★★★★ (11)
SIG M400 XSERIES 556NATO 16" 30RD
$1,683.99 Coastal Firearms
Sig Saur M400 SDI X-Series Rifle 5.56mm 30/rd Magazine 16" Barrel Black Magpul Stock
$1,684.99 Apocalypse Outfitters ★★★★★ (4)
SIG M400 SDI X 5.56 NATO 16" - M-LOK HG 30RD TELE STOCK BLACK
Free Shipping
$1,686.93 Freedom Firearms ★★★★★ (2)
SIG M400 SDI 5.56 16 XSERIES BLK TELE MLOK 30
$1,781.50 Bulletproof Outfitters ★★★★★ (133)
USED SIG Sauer M400 SDI X-Series 5.56 NATO Rifle – TANGO-MSR 1-10x26 FFP Scope, Magpul Bipod
Used
$1,799.00 GunPrime ★★★★★ (2,495)

UPC 798681664634 Price Graph

Today's low is $1,359.28, 7% below the 180-day average low of $1,461.93. Over the last 180 days, the lowest price peaked at $1,499.99 on July 20, 2026 and bottomed at $1,359.28 on September 6, 2026.

Daily Deals Email

Products at their 90-day low price.

Unsubscribe anytime with one click.

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