• Sig Sauer M400 SDI Semi Auto Rifle 5.56 NATO Magpul SL
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Sig Sauer

Sig Sauer M400 SDI Semi Auto Rifle 5.56 NATO Magpul SL

Sig Sauer M400 SDI Semi Auto Rifle 5.56 NATO Magpul SL

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The Sig Sauer M400 SDI is a semi-automatic rifle chambered in 5.56 NATO with a 16-inch threaded barrel and a 1:7" twist rate. Its Magpul SL adjustable stock spans 33.25 to 36.5 inches overall, and the rifle weighs 7 lbs.

A Sig Two-Stage Matchlite Duo trigger and ambidextrous controls with a lever safety support precise, adaptable handling, while the aluminum receiver and Sig flash hider round out the build.

Key Features

Brand Sig Sauer
Model M400 SDI
Product Type Semi-Automatic Rifle
Caliber 5.56x45mm NATO
Capacity 30
Barrel Length 16 in
Twist Rate 1:7"
Overall Length 33.25 - 36.50 in
Weight 7 lbs
Stock Magpul SL Adjustable
Trigger Sig Two-Stage Matchlite Duo
Safety Ambidextrous Lever
Receiver Material Aluminum
Muzzle Device Sig Flash Hider
Sights None
Condition New
Manufacturer SKU RM400SDI16BMSGRN
UPC 798681701216

Highlights

  • 5.56 NATO caliber with 30+1 capacity
  • 16-inch threaded barrel with 1:7" twist rate
  • Magpul SL adjustable stock (33.25" - 36.50" OAL)
  • Sig Two-Stage Matchlite Duo trigger
  • Ambidextrous controls with lever safety
  • Aluminum receiver with Sig flash hider
  • Lightweight at 7 lbs

Frequently asked questions

What is the barrel twist rate on the M400 SDI?

The 16-inch threaded barrel has a 1:7" twist rate.

What trigger does the M400 SDI use?

It is equipped with a Sig Two-Stage Matchlite Duo trigger.

What is the magazine capacity?

The rifle has a 30+1 capacity.

What is the overall length range?

With the Magpul SL adjustable stock, overall length spans 33.25 to 36.50 inches.

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