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SIG M400 SDI X 5.56 rifle, 16 in. chrome/moly barrel, black, 30-round

SIG Sauer M400 SDI X Rifle, 5.56 NATO, 16-Inch Barrel, Black, 30-Round, additional view 1

SIG Sauer M400 SDI X Rifle, 5.56 NATO, 16-Inch Barrel, Black, 30-Round, additional view 2

SIG Sauer M400 SDI X Rifle, 5.56 NATO, 16-Inch Barrel, Black, 30-Round, additional view 3

SIG Sauer M400 SDI X Rifle, 5.56 NATO, 16-Inch Barrel, Black, 30-Round, additional view 4

SIG Sauer M400 SDI X Rifle, 5.56 NATO, 16-Inch Barrel, Black, 30-Round, additional view 5

SIG Sauer M400 SDI X Rifle, 5.56 NATO, 16-Inch Barrel, Black, 30-Round

Name: SIG Sauer M400 SDI X Rifle, 5.56 NATO, 16-Inch Barrel, Black, 30-Round
Brand: SIG SAUER
SKU: SIGRM400-SDI-16B-P
Price: 1499.99 USD
Availability: InStock

$1,499.99

The SIG M400 SDI X is SIG Academy’s AR: fully ambidextrous controls including a bolt catch unique to the SDI lower, a rigid dual-clamp M-LOK handguard, and a Matchlite Duo two-stage. The 16 in. chrome/moly barrel is 1:7 with SIG’s flash-hider compensator. One 30-round magazine ships in the box. A factory red dot is not installed.

In stock

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SKU: SIGRM400-SDI-16B-P

UPC: 798681664634

Description

SIG Sauer M400 SDI X Rifle, 5.56 NATO, 16-Inch Barrel, Black, 30-Round

The SIG M400 SDI X is SIG Academy’s AR: fully ambidextrous controls including a bolt catch unique to the SDI lower, a rigid dual-clamp M-LOK handguard, and a Matchlite Duo two-stage.

SDI X is SIG Academy’s AR. Instructors asked for a fully ambidextrous rifle, including a bolt catch unique to the SDI lower, so left- and right-handed shooters run the same gun. A dual-clamp steel lockup keeps the M-LOK handguard rigid when lights and grips hang on all four sides. The Matchlite Duo two-stage is a flat 4.5–6.5 lb pull.

The 16 in. chrome/moly barrel is 1:7 twist with SIG’s flash-hider compensator. Magpul’s SL stock is six-position. The rifle is 7.0 lb, 36.5 in. extended and about 33.3 in. collapsed. Width is 2.8 in. Height is 7.1 in. A factory red dot is not installed on the iron-sight SDI rifles.

This black 16 in. SDI X

This is the black hard-coat SDI X rifle. 16 in. chrome/moly barrel, Magpul SL stock, one 30-round polymer magazine. Finish is black anodized, not Cerakote. A factory red dot is not installed. The SDI bolt catch is the control that separates this lower from a TREAD or FORGE.

What ships

One 30-round magazine ships in the box. This is a serialized 5.56 rifle and ships to a licensed FFL. See the SIG M400 collection and SIG rifles.

Specifications and Included Items

Model: RM400-SDI-16B-P
Caliber: 5.56 NATO
Barrel: 16 in. chrome/moly steel, 1:7 twist, 1/2-28 tapered shoulder
Muzzle: SIG flash-hider compensator
Operating system: Mid-length direct impingement
Trigger: SIG 2-stage Matchlite Duo, flat, about 4.5–6.5 lb
Controls: Fully ambidextrous, including SDI bolt catch/release, safety, charging handle, magazine catch
Handguard: Free-float M-LOK/Picatinny, dual-clamp steel lockup
Stock: 6-position Magpul SL, black
Finish: Black hard-coat anodized
Overall length: 36.5 in. extended, 33.3 in. collapsed
Weight: 7.0 lb
Optic: Optics-ready; a factory red dot is not installed
Magazine included: One 30-round polymer AR-15 magazine
FFL: Rifle; ships to a licensed FFL dealer