SIG M400 TREAD for Sale
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Quick Look at the SIG M400 Tread
The SIG M400 Tread was introduced by SIG Sauer as a civilian-friendly variant of its AR-style rifle lineup. Built for reliability and modularity, it offers high-end features in a mid-tier price bracket. The M400 Tread remains a popular choice for first-time buyers and tactical shooters alike.
Why It's a Top Choice
- Direct impingement AR-platform with premium fit and finish
- Free-floating M-LOK handguard for accessory versatility
- Nitride-coated barrel for added longevity
- Ambidextrous controls for user flexibility
- Compatible with standard AR-15 parts and upgrades
Key Variants
SIG M400 Tread
The standard model tailored for general-purpose shooting, with a durable 16-inch barrel and M-LOK handguard.
SIG M400 Tread Predator
Optimized for hunters, featuring a longer barrel, flat dark earth finish, and precision enhancements.
SIG M400 Tread Snakebite SE
Designed for enhanced recoil control and faster follow-ups with a muzzle brake and upgraded trigger.
SIG M400 Tread Coil
A limited-edition variant offering bolder aesthetics and enhanced ergonomics for tactical use.
SIG M400 Tread Pistol
Short-barrel configuration intended for close-quarters, with brace stabilization (check local laws).
Competitor Comparison
| Feature | Sig M400 Tread | Smith & Wesson M&P15 | Ruger AR-556 |
|---|---|---|---|
| MSRP | $949 | $799 | $799 |
| Capacity/Size | 30-round, 16 in. barrel | 30-round, 16 in. barrel | 30-round, 16.1 in. barrel |
| Weight | 7.0 lbs | 6.5 lbs | 6.8 lbs |
| Optics-Ready | Yes | Yes | Yes |
| Trigger Type | Single-stage, mil-spec | Standard mil-spec | Single-stage |
| Notable Pro | High-end build quality | Excellent value | Good reliability record |
| Notable Con | Higher price than peers | Basic furniture | Limited upgrades |
Best Use Cases
- Home defense
- Range training
- Three-gun and local competition
- Law enforcement patrol use
- Personal collection
FAQs
What is the barrel twist rate on the SIG M400 Tread?
The standard barrel has a 1:8 twist rate, ideal for stabilizing 55-77 grain 5.56 rounds.
Can I upgrade the trigger on the SIG M400 Tread?
Yes. It accepts any AR-15 compatible drop-in or mil-spec trigger group.
How does the SIG M400 Tread compare to other AR-15s?
It offers premium features at a mid-tier price, outperforming baseline models in finish and modularity.
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Sig Sauer M400 Tread Predator 5.56 16"
$1,099.00
Sig SIG M400 TREAD 5.56 NATO 16" S/S ADJ
$1,150.99
Sig SIG M400 TREAD 5.56 NATO 16" S/S ADJ
$1,074.99


