Sig Sauer M400

Sig Sauer M400

Sig Sauer M400

Model
Sig Sauer M400
Caliber
223/5.56
Capacity
30
Type
AR Rifle & Pistol
Barrel Length
9 - 20"
Weight
6.5 - 7.5 lbs.
The SIG Sauer M400 is a family of AR-15-style rifles and pistols that cater to a variety of shooting applications, including self-defense, recreational shooting, and professional use. The M400 is built on a direct impingement gas system, which is similar to the original AR-15 design. This system allows for smoother operation and ease of maintenance. The M400 is chambered in 5.56×45mm NATO, .223 Remington, and .300 AAC Blackout, making it versatile for different calibers and shooting preferences. Depending on the variant, barrel lengths range from 9 to 20", allowing for a variety of applications from compact models ideal for maneuverability to longer-barrel rifles focused on precision. The SIGM400 line offers several configurations, including the SIGM400 Predator for hunting, with a 16" barrel, and the SIGPM400 Elite PSB, which is a pistol variant featuring an 11.5" barrel in 5.56 NATO or a 9" barrel in .300 Blackout. The Pistol Stabilizing Brace (PSB) is a key accessory in the pistol models, offering better control and stabilization. The M400 features a free-floating aluminum handguard, offering ample rail space for optics, lights, and other accessories. Variants like the SIGM400 TREAD emphasize modularity, allowing shooters to add components like suppressors or optics to suit their preferences. The M400 rifles and pistols are praised for their reliability, accuracy, and customization options.

Sig Sauer M400 Tread

View products:
from $749.99
UPC: 798681597765
MPN: RM400-16B-TRD
Caliber: 223/5.56
Features: Mid-Length Gas System;Free Floationg M-Lok Handguard
Stock: Magpul SL-K 6 position Telescoping Stock
from $780.00
UPC: 798681688012
MPN: RM400-16B-TRD-V2G
Caliber: 223/5.56
Features: M-LOK Enhanced Handguard
Stock: MAGPUL SL-K Telescoping Stock
from $875.00
UPC: 798681619542
MPN: PM400-11B-TRD
Caliber: 223/5.56
Features: Single-Stage Trigger, Blade 2.0 Pistol Brace, Free-Floating M-LOK Handguard
Stock: Alloy Frame
from $899.00
UPC: 798681698950
MPN: PM40011BTRDV2
Caliber: 223/5.56
Features: M-LOK Handguard, Picatinny Rail, Threaded Barrel, Aluminum Frame
Stock: Magpul BSL Brace
from $899.99
UPC: 798681688005
MPN: RM400-16B-TRD-V2
Caliber: 223/5.56
Features: M-LOK Enhanced Handguard
Stock: MAGPUL SL-K Telescoping Stock
from $917.33
UPC: 798681715282
MPN: RM40016BTRDV210
Caliber: 223/5.56
Features: Twist Rate: 1:8", M-LOK Enhanced, SIG Matchlite 2-Stage, Mid-Length Gas System, Direct Impingement
Stock: Magpul SL-K Telescoping
from $979.99
UPC: 798681665488
MPN: RM40016BTRDDC
Caliber: 223/5.56
from $1,009.99
UPC: 798681698233
MPN: RM400-16B-TRD-V2CON
Caliber: 223/5.56
Features: 1:8 Twist Rate, Sig 2-Stage Trigger, Enhanced M-LOK Handguard, Lower QD Mounts
Stock: Magpul SL-K
from $1,069.99
UPC: 798681704606
MPN: RM400-16B-TRD-V2-TACPAC
Caliber: 223/5.56
Stock: 6-Position SL-K
from $1,071.99
UPC: 798681726202
MPN: RM400-16B-TRD-V2-COIL
Caliber: 223/5.56
Features: Sig Matchlite Duo 2-Stage Trigger, Integrated QD Sling Mount
Stock: Magpul SL-K 6-Position Telescoping
See more "Sig Sauer M400 Tread" products
Sig Sauer M400 Tread
Sig Sauer M400 Tread
UPC: 798681632954
MPN: RM400-16B-TRD-CA
Caliber: 223/5.56
Features: California Compliant
Full specification

Sig Sauer M400 SDI

View products:
from $1,369.68
UPC: 798681698967
MPN: PM400SDI11BBLK
Caliber: 223/5.56
Stock: Magpul BSL Brace
from $1,382.00
UPC: 798681664634
MPN: RM400SDI16BP
Caliber: 223/5.56
from $1,470.00
UPC: 798681701216
MPN: RM400-SDI-16B-MSGRN
Caliber: 223/5.56
Features: M-LOK, Reduced Angle Grip, 1:7" Twist, Chrome Moly Steel Barrel, Mid-Length Direct Impingement, Flat 2-Stage Matchlite Duo
Stock: 6-position Magpul MOE-SL
from $1,599.99
UPC: 798681714469
MPN: RM400-SDI-16B-FDE
Caliber: 223/5.56
Stock: Collapsible / Folding (Magpul SL)
from $1,320.58
UPC: 798681714452
MPN: PM400-SDI-11B-FDE
Caliber: 223/5.56
Features: Fully Ambidextrous Controls, Sig 2-Stage Matchlite Duo Trigger
Stock: Magpul BSL Pistol Stabilizing Brace
from $1,372.15
UPC: 798681588459
MPN: RM400-SDI-16B-VTAC
Caliber: 223/5.56
Features: Deep Fluted Barrel, Sig Direct Impingement, Free-Float VTAC Handguard
Stock: Collapsible / Folding Stock

Other versions

from $1,125.00
UPC: 798681654857
MPN: WRM400-556N-16B-PRO
Caliber: 223/5.56
Features: Free-floating M-LOK SIG Enhanced Trigger
Finish: Black
from $1,183.24
UPC: 798681716593
MPN: RM400-16B-ROSE-R5X2
Caliber: 223/5.56
Features: Matte Rose Gold Controls, Compensator/flash Hider in Rose Gold, Rose-engineered 10" M-LOK handguard
Finish: Black/ Rose
from $1,270.88
UPC: 798681725229
MPN: RM400-16B-ROSE-R5X2-10
Caliber: 223/5.56
Features: Rose Engraved M-LOK 10” Handguard, Sig 2-Stage Matchlite Trigger, Rose Kit
Finish: Black Anodized / Matte Rose Gold
from $1,499.99
UPC: 798681639519
MPN: RM400-SDI-16B-DH3
Caliber: 223/5.56
Features: Fluted Competition Barrel, Ambidextrous Controls, Timney/Daniel Horner Trigger
Finish: Gray Cerakote
from $1,749.99
UPC: 798681716128
MPN: RM400-SDI-16B-R5FX
Caliber: 223/5.56
Features: Sig Sauer FOXTROT-MSR Light Included, Vertical Foregrip, Sig Sauer 2-Stage Matchlite Duo Trigger, Low Profile Gas Block
Finish: Black
from $612.19
UPC: 798681441143
MPN: UDRM400-16B-C
Caliber: 223/5.56
Finish: Black
from $696.63
UPC: 798681503155
MPN: UDPM400-11B
Caliber: 223/5.56
Finish: Matte
from $755.89
UPC: 798681472215
MPN: RM400-16B-B5-GRY
Caliber: 223/5.56
Features: KeyMod Handguard, B5 Grip, Picatinny Rail, Nitride Steel Barrel, 1:7 Twist
Finish: Hard Coat Anodized Black/ Gray
from $858.93
UPC: 798681432660
MPN: RM400-16B-C
Caliber: 223/5.56
Finish: Black Hard Coat Anodized Receiver finish: Blued/Black
from $944.67
UPC: 798681565825
MPN: UDPM400-300-9B-PSB
Caliber: 300 BLK
Features: , Direct Impingement, Pistol Stabilizing Brace
Finish: Black
from $1,029.99
UPC: 798681539178
MPN: PM400-11B-ELITE
Caliber: 223/5.56
Features: Threaded Barrel Model, Direct Impingement, Pistol Stabilizing Brace, Aluminum Keymod Handguard
Finish: Black
from $1,029.99
UPC: 798681436897
MPN: RM400-16B-C-SRP
Caliber: 223/5.56
Features: Railed Gas Block and Collapsible Butt Stock

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Compare prices for Sig Sauer M400 SDI from all vendors

Product Price
Store MPN UPC
From: $1,382.00
Ferrari Firearms and 17 more offers PM400-SDI-11B-BLK 798681698967
From: $1,299.99
Hinterland Outfitters and 16 more offers RM40016BROSER5X210 798681725229
$1,601.00
TheGunDock.com - 798681721412
$6.99
CDNN Sports - 088234691379
From: $1,382.00
Ferrari Firearms and 21 more offers RM400-SDI-16B-P 798681664634
$979.99
Guns.com - 798681665488
From: $749.99
Joe Bob Outfitters and 4 more offers GUN-RM400-16B-TRD 798681597765
From: $1,599.99
Eurooptic and 4 more offers RM400-SDI-16B-FDE 798681714469
From: $1,470.00
Ferrari Firearms and 8 more offers RM400-SDI-16B-MSG 798681701216
MAP
Caperton’s Guns and 36 more offers RM400-16B-ROSE-R5X2 798681716593
From: $1,009.99
Guns.com and 1 more offer - 798681698233
From: $1,071.99
Range USA and 3 more offers RM40016BTRDV2COIL 798681726202
From: $946.00
Ferrari Firearms and 19 more offers  RM400-556N-16B-FORGE 798681744114
From: $910.00
Bereli and 15 more offers RM400-16B-TRD-V2 798681688005
From: $923.99
Guns.com and 8 more offers - 798681688012

Sig Sauer M400 SDI deals

2 weeks ago
Sig Sauer M400 SDI XSeries 223/5.56 16" 30rd Moss Green - $1461.2 (Email for price) The M400 SDI XSeries is built with an aluminum M-LOK handguard, allowing for easy attachment of accessories while maintaining a lightweight design. The Sig 2-Stage Matchlite Duo trigger ensures a crisp, predictable
0
4 months ago
Sig Sauer M400 Tread Predator 15-Inch Mlok Handguard Black - $99.99 – Enhanced replacement 15" handguard for the M400 TREAD Predator. – M-LOK mounting holes – Lightening cuts – Free-float for repeatable accuracy regardless of rested or not. – Two-screw replacement for TREAD rifles. – SKU 8900739 –
0
Sig Sauer 100
4 months ago
SIG M400 5.56 NATO 16" Upper Receiver Assembly w/ Tango-MSR LPVO 1-6x24mm Optic - $999.99 Upgrade your M4/AR rifle or lower assembly with this complete, drop-in M400 upper assembly. This kit includes all the necessary components for a complete swap, including a two-stage match trigger as well as the
0
Sig Sauer 200
9 months ago
Sig Sauer ROSE M400 Gun Mat CERUS GEAR - $29.99 We have partnered with Cerus Gear to bring you the most accurate schematic, professional gun mat for your workbench. This lightweight, forgiving, heavy-duty cleaning mat is the perfect addition to your armorer's bench. Made specifically for working on
0
10 months ago
Sig Sauer M400 Tread V2 5.56mm NATO 16in Disasters Earth Semi Automatic Modern Sporting Rifle - 30+1 Rounds - $909.47 Sig Sauer M400 Tread V2 5.56mm NATO 16in Disasters Earth Semi Automatic Modern Sporting Rifle - 30+1 Rounds - The M400-TREAD features a free-floating M-LOK enhanced handguard that is
0
11 months ago
Sig Sauer M400 TACPAC 5.56 NATO 16" 30rd Rifle w/ ROMEO MSR Red Dot - RM400-16B-TRD-V2-TACPAC - $1079 The 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. The lower receiver
0
12 months ago
Sig Sauer M400 SDI X-Series 5.56mm Semi-Automatic Rifle with M-LOK Handguard - $1349.99 The SIG SAUER M400 SDI XSERIES packs a rich set of features and upgrades into the M400 platform delivering an advanced performance rifle right out of the box. The M400 XSERIES lower features fully ambidextrous
0
13 months ago
LE ONLY Sig Sauer M400 Pro 5.56 NATO Semi-Automatic Rifle with 16 Inch Barrel and Folding Sights - $1075.00 A rock-solid foundation only gets you so far. That explains why many of today's rifles ship with plastic handguards and throwaway furniture, two things not found on the SIGM400 PRO, SIG
0
11 months ago
Sig Sauer MLOK 15" Handguard, 5.56 NATO, Free Float, Black - $97.34 The Sig Sauer M400 Tread Enhanced 15" Black M-LOK Handguard HGRD-TRD-E15-MLOK-BLK is a factory replacement part designed specifically for the M400 TREAD rifle chambered in 5.56 NATO. It features a 15-inch free-floating design made
0