Home / Rifles / Sig Sauer / SIG SAUER M400-Sentry 5.56mm NATO 16in 30rd Semi-Auto Rifle w/ Romeo5 Gen II & Foxtrot-MSR Full Size Light (RM400-SDI-16B-R5FX)

SIG SAUER M400-Sentry 5.56mm NATO 16in 30rd Semi-Auto Rifle w/ Romeo5 Gen II & Foxtrot-MSR Full Size Light (RM400-SDI-16B-R5FX)

SIG SAUER M400-Sentry 5.56mm NATO 16in 30rd Semi-Auto Rifle w/ Romeo5 Gen II & Foxtrot-MSR Full Size Light (RM400-SDI-16B-R5FX)

Lowest Listed Price

$1,749.99

MSRP

$1,749.99

Savings

See retailer

Retailers Reporting In Stock

1 Stores

Updated

Aug 26, 2026

Compare Deals from 1 Retailers

Sorted by lowest price

Specifications

Brand

Description

Shop SIG SAUER M400-Sentry 5.56mm NATO 16in 30rd Semi-Auto Rifle w/ Romeo5 Gen II & Foxtrot-MSR Full Size Light (RM400-SDI-16B-R5FX). Buy best Rifles from gritrsports.com | Reviews and Shipping options available

Similar Products

SIG SAUER M400 SDI X-Series 5.56mm NATO 16in 30rd Flat Dark Earth Semi-Auto Rifle (RM400-SDI-16B-FDE) - Sig Sauer

SIG SAUER M400 SDI X-Series 5.56mm NATO 16in 30rd Flat Dark Earth Semi-Auto Rifle (RM400-SDI-16B-FDE)

● In Stock

SIG SAUER M400 SDI X-Series 5.56mm NATO 16in 30rd Moss Green Semi-Auto Rifle (RM400-SDI-16B-MSGRN) - Sig Sauer

SIG SAUER M400 SDI X-Series 5.56mm NATO 16in 30rd Moss Green Semi-Auto Rifle (RM400-SDI-16B-MSGRN)

● In Stock

SIG SAUER M400 SDI Xseries 5.56 NATO 16in 30rd Magpul Stock Black Anodized Rifle (RM400-SDI-16B-P) - Sig Sauer

SIG SAUER M400 SDI Xseries 5.56 NATO 16in 30rd Magpul Stock Black Anodized Rifle (RM400-SDI-16B-P)

● In Stock

SIG SAUER M400 Rose 5.56mm 16in 30rd Rose/Black Semi-Auto Rifle w/ Romeo 5X2 (RM400-16B-ROSE-R5X2) - Sig Sauer

SIG SAUER M400 Rose 5.56mm 16in 30rd Rose/Black Semi-Auto Rifle w/ Romeo 5X2 (RM400-16B-ROSE-R5X2)

● In Stock

SIG SAUER SIGM400 5.56 NATO 16in 2x10rd Semi-Auto Rifle w/ ROMEO5 GENII Red Dot (RM400-16B-ROSE-R5X2-10) - Sig Sauer

SIG SAUER SIGM400 5.56 NATO 16in 2x10rd Semi-Auto Rifle w/ ROMEO5 GENII Red Dot (RM400-16B-ROSE-R5X2-10)

● In Stock

SIG SAUER SIG516 G3 5.56 NATO 16in 30rd Black Semi-Auto Rifle (R516G3-556N-16B-CP1) - Sig Sauer

SIG SAUER SIG516 G3 5.56 NATO 16in 30rd Black Semi-Auto Rifle (R516G3-556N-16B-CP1)

● In Stock

SIG SAUER SIG516 G3 5.56 NATO 16in 10rd Semi-Auto Rifle (R516G3-556N-16B-CP1-10) - Sig Sauer

SIG SAUER SIG516 G3 5.56 NATO 16in 10rd Semi-Auto Rifle (R516G3-556N-16B-CP1-10)

● In Stock

Related Products

Sig Sauer M400 Rose Semi Automatic Rifle 5.56x45mm NATO 16" Black Threaded Barrel Black Frame Black Pistol Grip With Scope - Sig Sauer

Sig Sauer M400 Rose Semi Automatic Rifle 5.56x45mm NATO 16" Black Threaded Barrel Black Frame Black Pistol Grip With Scope

$1,296 $1,529.99

● In Stock

Smith & Wesson 1854 Stealth Hunter Tactical Lever Action Rifle 357 Magnum 16.3" Black Threaded Barrel Black Frame Black Field Stock - Smith & Wesson / S&W

Smith & Wesson / S&W

Smith & Wesson 1854 Stealth Hunter Tactical Lever Action Rifle 357 Magnum 16.3" Black Threaded Barrel Black Frame Black Field Stock

● In Stock

Zastava ZPAP M70 Semi Automatic Rifle 7.62x39mm 16.3" Blued Threaded Barrel Blued Frame Walnut Pistol Grip - Zastava Arms

Zastava ZPAP M70 Semi Automatic Rifle 7.62x39mm 16.3" Blued Threaded Barrel Blued Frame Walnut Pistol Grip

● In Stock

Zastava ZPAP M70 Semi Automatic Rifle 7.62x39mm 16.3" Black Threaded Barrel Black Frame Redwood Pistol Grip - Zastava Arms

Zastava ZPAP M70 Semi Automatic Rifle 7.62x39mm 16.3" Black Threaded Barrel Black Frame Redwood Pistol Grip

● In Stock

Springfield Armory Saint Victor AR-15 Semi Automatic Rifle 5.56x45mm NATO 16" Melonite Threaded Barrel Black Frame Black Pistol Grip 30+1 - Springfield Armory

Springfield Armory

Springfield Armory Saint Victor AR-15 Semi Automatic Rifle 5.56x45mm NATO 16" Melonite Threaded Barrel Black Frame Black Pistol Grip 30+1

● In Stock

Marlin 1894 Trapper Lever Action Rifle 357 Magnum 16.1" Stainless Threaded Barrel Stainless Frame Laminate Field Stock - Marlin

Marlin 1894 Trapper Lever Action Rifle 357 Magnum 16.1" Stainless Threaded Barrel Stainless Frame Laminate Field Stock

$1,070.99 $1,599

● In Stock

Henry Supreme Lever Action Rifle 223 Remington 18" Black Threaded Barrel Black Frame Walnut Field Stock - Henry Repeating Arms

Henry Repeating Arms

Henry Supreme Lever Action Rifle 223 Remington 18" Black Threaded Barrel Black Frame Walnut Field Stock

● In Stock

Related Searches

Sig Sauer deals Rifles