M400 SDI X | 11.5"

SIG SAUER M400 SDI X 11.5"

The SIG SAUER M400 SDI X offers a wealth of features and upgrades for the M400 platform, making it an advanced, high-performance rifle.

The SIG SAUER M400 SDI XSERIES lower receiver features fully ambidextrous controls, including the bolt catch and release, selector switch, charging handle, and magazine release. Another unique feature of the XSERIES is the precision-machined, flash-cut upper and lower receivers with a handguard clamping system that minimizes flex when using mounted accessories. Additional features include a hybrid muzzle brake/compensator, a 2-stage Matchlite trigger, and a Magpul SL telescoping stock.

TREAD brand accessories, which can be purchased separately, include

M-LOK handguard with lightweight cutouts for reduced weight, available in 13" and 15" lengths;

3-chamber compensator;

Ambidextrous loading handle made of aircraft-grade aluminum with a double roll-pin design;

ROMEO5 sight with a 2 MOA dot, ten illumination settings, MOTAC, and a 50k battery life;

Folding front sight and rear sight, easy to install, adjustable, and ready for quick use;

M-LOK front sight adapter with co-witness height made of lightweight aluminum;

Multiple configurations of M-LOK grip kits made of high-strength polymer;

Factory-upgraded, single-stage trigger with a flat blade.

A cantonal exemption permit (ABG) is required to purchase this firearm.

Please send us the following documents immediately before or after your online purchase:
1. All three copies of the approved cantonal exemption permit (ABG), in original and signed.
2. A copy of a valid government-issued ID (identity card or passport)

Or bring the above documents with you when you pick up the firearm at our store.

Please send the documents to the following address:

Thoron AG
Bahnhofstrasse 25a
6422 Steinen