Sig Sauer, Inc. M400 Tread 5.56x45 Nato Semi-Auto Rifle - M400 Tread 5.56x45 Nato 16" Bbl (1)30rd Mag Snakebite Gold

5.56 NATO16" barrelmid-lengthNFA Item: No

Carbine

71/ 100

Outfitters Score™

Good

Sig Sauer, Inc. scores as a unrated build with fair pricing and a bare-bones configuration.

Our proprietary rating combines brand tier, price percentile within the caliber, feature completeness, barrel versatility, retailer availability, caliber practicality, and use-case fit.

Brand Quality12/25

Value16/20

Feature Completeness5/15

Barrel15/15

Availability8/10

Caliber10/10

Use Case Fit5/5

Description

The M400 TREAD is an optics ready, aluminum frame rifle. TREAD features a 16" stainless steel barrel with a free-floating M-LOK handguard, a single-stage polished/hard-coat trigger, ambidextrous controls, a Magpul(TM) SL-K 6 position telescoping stock, a mid-length gas system, and is available in 5.56 NATO. Other TREAD branded accessories (purchased separately) include: M-LOK handguard with lightening cuts to reduce weight, available in 13" and 15" lengths; 3 chamber compensator; Ambidextrous charging handle made of aircraft grade aluminum and a dual roll pin design; ROMEO5 optic featuring a 2MOA dot with ten illumination settings, MOTAC Mfg: Sig Sauer, Inc.

Features

Free Float|M Lok|Ambidextrous|Ambi

Full Specifications

Overview

Brand	Sig Sauer, Inc.
Model	RM400-16B-TRD-SB-SE
SKU	100042984
Rifle Type	semi auto
Platform	AR15
Caliber	5.56 NATO
Chamber	5.56 NATO
UPC	798681656363

Barrel

Barrel Length	16"
Barrel Finish	stainless

Gas System

Gas System Length

mid-length

Receiver

Forward Assist	No
Dust Cover	No

Handguard

Handguard Type	m-lok
Handguard Material	aluminum
Free Float	Yes

Furniture

Stock Type

collapsible

Trigger

Trigger Type

single-stage

Muzzle

Muzzle Device	compensator
Suppressor Ready	No

Sights & Optics

Sights Included	none
Optic Ready	Yes

Dimensions & Weight

Magazine Capacity

30 rounds

Compliance

CA Compliant	No
Classification	Rifle
NFA Item	No

What's Included (Complete Rifle)

This is a complete, ready-to-shoot firearm.

✓

Upper Receiver

✓

Lower Receiver

✓

Barrel

16"

✓

Bolt Carrier Group

✓

Handguard

m-lok, Free Float

✓

Stock

collapsible

✓

Grip

✓

Trigger

single-stage

✓

Muzzle Device

compensator

✓

Charging Handle

✓

Gas Block

✓

Gas Tube

mid-length-length

✓

Buffer Tube

–

Iron Sights

–

Optic

Compare Similar Rifles

Diamondback

DB15 5.56/.223, 16" Barrel, ACS-L Stock, MBUS Pro Sights, M-LOK, Black, 30rd

$899.99

Impact GunsIn Stock

Ruger

Ar-556(R) Mpr 5.56x45 Nato Semi-Auto Rifle - Ar-556 Mpr 5.56x45 Nato 18" Bbl (1)30rd Mag American Flag

$897.99

BrownellsIn Stock

Rock

River Arms LAR-15 CAR A4 Flat Top AR-15 5.56/223 16" Barrel Optic Ready, Gas Block Sight Base, 30 Rd Mag

$876.29

Impact GunsIn Stock

Smith & Wesson

LE M&P15 223/5.56 NATO 16" Barrel 6-Position Black Stock Black 30rdf Mag

$899.89

Impact GunsIn Stock

Black

Rain Ordnance Spec15 5.56x45mm NATO 16" Barrel, Black Anodized 7075-T6 Receiver, B5 Sopmod Stock, 30 Rd

$892.19

Impact GunsIn Stock

Shark

Coast Tactical Viking .223 Rem/5.56mm, 16" Barrel, Custom Engraving, 30rd

$883.89

Impact GunsIn Stock

Sig Sauer, Inc.

M400 Tread 5.56x45 Nato Semi-Auto Rifle - M400 Tread 5.56x45 Nato 16" Bbl (1)30rd Mag Snakebite Gold

Name: Sig Sauer, Inc. M400 Tread 5.56x45 Nato Semi-Auto Rifle - M400 Tread 5.56x45 Nato 16" Bbl (1)30rd Mag Snakebite Gold
Brand: Sig Sauer, Inc.
SKU: 100042984
Price: 1249.99 USD
Availability: InStock
Rating: 3.8 (1 reviews)

RM400-16B-TRD-SB-SE

Built Right for an Entry-Level AR-15

Starting at

$1249.99

Across 1 retailer

Compare Prices

Brownells

$1249.99Buy

Build It Yourself

Want to customize? Build similar specs from individual parts.

Open in Budget Builder: $1250 Open Builder (5.56 NATO)

State Legal Check

Prices are fetched from affiliate partners. AR15 Outfitters may earn a commission on purchases made through links on this site. This does not affect pricing or our recommendations.