SIGM400, 5.56 NATO, RIFLE, 16IN, FORGE, BLK, SEMI, ROMEO-MSR GEN II,

Price History
SIGM400, 5.56 NATO, RIFLE, 16IN, FORGE, BLK, SEMI, ROMEO-MSR GEN II,

UPC 798681744121 from 65 retailers

  • 5.56x45mm
  • Sig Sauer
Shipping:
SIGM400, 5.56 NATO, RIFLE, 16IN, FORGE, BLK, SEMI, ROMEO-MSR GEN II, TELE STOCK, AL MLOK HG, (1) 10RD MAG
Email for Price Shipping $20
$905.84 DK Gun & Dog ★★★★★ (56)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
$966.81 Ferrari Firearms

UPC 798681744121 Price Graph

Today's low is $905.84, 7% below the 180-day average low of $978.50. Over the last 180 days, the lowest price peaked at $1,010.00 on August 7, 2026 and bottomed at $905.84 on September 6, 2026.

SIG M400 FORGE 5.56 NATO 16" - W/ROMEO-MSR TEL-STK 10RD BLACK
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$999.99 Kinetic Armory ★★★★★ (3)
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
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$999.99 Canoe Creek Armory ★★★★★ (17)
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
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$999.99 Garrison's Guns ★★★★★ (21)
SIG M400 FORGE 5.56 NATO 16" - W/ROMEO-MSR TEL-STK 10RD BLACK
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$999.99 Conkey's Outdoors ★★★★★ (175)
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
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$999.99 Cummings Family Firearms ★★★★★ (52)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
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$999.99 Caliber Exchange ★★★★★ (1)
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
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$999.99 Axolotl Arms ★★★★★ (126)
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
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$999.99 Timber Hole Outdoors ★★★★★ (5)

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SIG Sauer M400 Forge Rifle with Romeo-MSR Gen II, 5.56 NATO, 16-Inch Barrel, Black, 10-Round
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$999.99 Deerford Defense
SIG M400 FRG RFL 5.56 10R BLK
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$999.99 Riddle Firearms
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Free Shipping
$999.99 Safe Haven Defense
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
Free Shipping CC Fee 3% $10 Off Code CALIBERKING
$999.99 Armed in Michigan ★★★★★ (714)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Free Shipping CC Fee 3%
$999.99 Minutemen Defense ★★★★★ (54)
SIG SAUER M400 Forge 5.56 NATO 16" Semi-Auto AR Rifle 10+1
Shipping $10
$999.99 Alexander's Store ★★★★★ (1,532)
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
Shipping $15
$999.99 Extreme Products ★★★★★ (83)
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
Shipping $16
$999.99 Riflenetics ★★★★★ (65)
Sig Sauer M400 Forge RM400-556N-16B-FORGE-10 Rifle 5.56 NATO 16" 10+1 Semi-Auto Romeo-MSR Gen II Red Dot
Shipping $18
$999.99 Classic Firearms ★★★★★ (2,454)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Shipping $18
$999.99 Blackbox Ballistics ★★★★★ (2)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Shipping $18
$999.99 Sharp's Shooting Supply ★★★★★ (34)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Shipping $20 Free Shipping > $1,000
$999.99 Dave's Guns ★★★★★ (28)
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
Shipping $20
$999.99 Custom Creatives Group ★★★★★ (24)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Shipping $20
$999.99 JB Armament ★★★★★ (126)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Shipping $20 Free Shipping > $1,000
$999.99 Life2A ★★★★★ (3)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Shipping $25 $25 Off Orders Over $200 Code LOCKNLOAD25
$999.99 Scottsodg.com
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
$5 Off - Use Code CALIBERKING
$999.99 Gun Place ★★★★★ (206)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Free Shipping > $1,250
$999.99 Nadir Solutions ★★★★★ (18)
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
Free Shipping > $1,000 CC Fee 3%
$999.99 Bunker Hill Ballistics ★★★★★ (9)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
$999.99 EK Tactical ★★★★★ (10)
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
$999.99 Allied Arms ★★★★★ (310)
SIGM400, 5.56 NATO, RIFLE, 16IN, FORGE, BLK, SEMI, ROMEO-MSR GEN II, TELE STOCK, AL MLOK HG, (1) 10RD MAG
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$999.99 Gun Wise
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver W/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
$999.99 Shiner Tactical ★★★★★ (6)
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
$999.99 Tungsten Creek Tactical
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
$999.99 Big Bee Bee ★★★★★ (11)
SIG SAUER M400 FORGE 5.56 RIFLE 16.5" BBL, BLACK, ROMEO MSR G2, TELESTOCK 1-10RD MAG
$999.99 Pickett's Mill Armory ★★★★★ (26)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
$999.99 Patriotic Firearms
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
$999.99 WTW Arms ★★★★★ (68)
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
$999.99 Birmingham Hill Armory ★★★★★ (16)
SIG SAUER M400 FORGE 5.56 RIFLE 16.5" BBL, BLACK, ROMEO MSR G2, TELESTOCK 1-10RD MAG
$999.99 Pathfinder Militaria ★★★★★ (106)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
$999.99 CLB Guns ★★★★★ (45)
SIG Sauer M400 Forge 5.56 NATO ROMEO-MSR Gen II 10rd
$999.99 Georgia Guns & Ammo ★★★★★ (2)
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
$999.99 Black Bayou Armory ★★★★★ (83)
Sig Sauer M400 Forge Black Rifle 5.56 NATO 10rd Magazine 16" Barrel ROMEO-MSR GEN II Adjustable Stock M-LOK Handguard
$999.99 Armored Boar Gunworks ★★★★★ (53)
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
$999.99 Highland Arms ★★★★★ (49)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
$999.99 MCM Tactical ★★★★★ (60)
SIG SAUER M400 FORGE 5.56 RIFLE 16.5" BBL, BLACK, ROMEO MSR G2, TELESTOCK 1-10RD MAG
$999.99 Get Guns N Ammo
SIG M400 Forge 5.56 NATO AR Rifle with ROMEO MSR
$999.99 Good 4 Guns ★★★★★ (276)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
CC Fee 3%
$999.99 Cornerstone Arms ★★★★★ (373)
SIG M400 FORGE 5.56 NATO 16" - W/ROMEO-MSR TEL-STK 10RD BLACK
CC Fee 6%
$999.99 All Things Firearm ★★★★★ (3)
Sig Sauer M400 Forge Black Rifle 5.56 NATO 10rd Magazine 16" Barrel ROMEO-MSR GEN II Adjustable Stock M-LOK Handguard
$1,010.00 Third Shift
SIG SAUER M400 FORGE 5.56 RIFLE 16.5" BBL, BLACK, ROMEO MSR G2, TELESTOCK 1-10RD MAG
Shipping $20
$1,010.36 Down Range Firearms ★★★★★ (8)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
$1,014.99 Precision Gunworks
Sig Sauer M400 FORGE 5.56 16" Romeo-MSR MLOK Blk 10rd
Free Shipping
$1,032.99 BuyAGun ★★★★★ (3)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
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$1,034.48 Lightning Strike Arms ★★★★★ (32)
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
$1,034.99 2 If By Sea Tactical ★★★★★ (135)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
$1,044.25 Redsand Tactical
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
$1,045.20 Firearms Express
Sig Sauer M400 Forge 798681744121 5.56 mm NATO
$1,047.99 C-ME Firearms
SIG M400 FORGE 5.56 NATO 16 BLK ROMEO MSR 10RD
Free Shipping
$1,061.99 Timberlake Firearms ★★★★★ (11)
Sig Sauer M400 FORGE 16" 5.56 NATO AR Rifle (10rd Mag) w/ Romeo MSR, Black
$1,100.99 Palmetto State Armory ★★★★★ (1,164)
Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R
$1,122.99 Coastal Firearms
Sig Sauer M400 Black Rifle 5.56 NATO 10rd Magazine 16" Barrel ROMEO-MSR GEN II Adjustable Stock M-LOK Handguard
$1,123.99 Apocalypse Outfitters ★★★★★ (4)
SIG SAUER M400 FORGE 5.56MM BLK 16" 10+1
Free Shipping
$1,124.77 Freedom Firearms ★★★★★ (2)
Sig Sauer M400 Forge Black Rifle 5.56 NATO 10rd Magazine 16" Barrel ROMEO-MSR GEN II Adjustable Stock M-LOK Handguard
$1,187.71 Bulletproof Outfitters ★★★★★ (133)

UPC 798681744121 Price Graph

Today's low is $905.84, 7% below the 180-day average low of $978.50. Over the last 180 days, the lowest price peaked at $1,010.00 on August 7, 2026 and bottomed at $905.84 on September 6, 2026.

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Products at their 90-day low price.

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