The Gun Store | Waterbury CT

131073
Sig Sauer Electro-Optics SOT61239 Tango6T Flat Dark Earth 1-6x24mm 30mm Tube Illuminated DWLR6 Reticle
November 19, 2025
142543
Patriot Ordnance Factory 01734 Rogue Prescott 6.5 Creedmoor 20″ DI 20+1 Black Anodized Rec 14.50″ Renegade M-LOK Stainless Steel Fluted Barrel Black Adjustable Stock Black Polymer MFT Grip Right Hand
November 19, 2025

Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16″ Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15″ M-LOK Handguard, Synthetic Magpul SL-K Stock, Black Polymer Grip

$1,499.99

Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16″ Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15″ M-LOK Handguard, Synthetic Magpul SL-K Stock, Black Polymer Grip

13 in stock

SKU: LIP|SIRM400SDI16BP Category:

The M400 X-series features a free-floating M-LOK handguard, Magpul SL-K 6-position telescoping stock, Sig Flat Match Grade trigger, 16″ Chrome Moly barrel, and a 7075 T-6 aluminum receiver with a black hardcoat anodized finish.

UPC

798681664634

Manufacturer

Sig Sauer

Manufacturer Part Number

RM400-SDI-16B-P

ATF Type

MODERN SPORTING RIFLE

Action

Semi-Auto

Sights

No

Rate of Twist

1:7"

State Restriction (WA)

NO DIRECT SHIP TO WASHINGTON

State Restriction (RI)

NO DIRECT SHIP TO RHODE ISLAND

State Restriction (CA)

NO DIRECT SHIP TO CALIFORNIA

Capacity

30

Length

46.1000

Caliber/Gauge

.223 REM/5.56 NATO

Barrel Length

16

Safety

Ambidextrous

Product Type

AR

Model

M400

Barrel Finish

Black FNC

Units per Box

1

Thread Pattern

1/2"-28 tpi

Number of Magazines

1 30 rd.

Package Height

4.3

Package Width

11.3

Shipping Weight

10.0

Magazine Included

1 x 30-Round