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Tombstone Tactical


Sig Sauer RM400-16B-EC M400 Enhanced MOE Rifle 5.56mm 16in 30rd Black

Sig Sauer RM400-16B-EC M400 Enhanced MOE Rifle 5.56mm 16in 30rd Black for sale at Tombstone Tactical.
Manufacturer: Sig Sauer
Part Number: RM400-16B-EC
UPC Number: 798681432684
Category: AR-15 AR-10 - Rifles
Model: AR-15
Caliber: 5.56mm NATO
Action: Semi-Automatic
MSRP: $1234.00

Out of Stock

Watch List

M400 Enhanced MOE in 5.56mm NATO, Sig Sauer part number RM400-16B-EC

The Sig Sauer RM400-16B-EC M400 Enhanced MOE Rifle in 5.56mm features a 16-inch chrome-lined barrel with 1-7" twist, black finish, flat-top upper receiver, Magpul MOE collapsible stock, Magpul pistol grip, Magpul forend, A2 front sight post, rear flip-up sight, an overall length of 35.6 inches, an unloaded weight of 6.7 lbs, and a 30+1 round capacity.

From the manufacturer

Sig Sauer M400 Semi-automatic AR 223 Rem 556NATO 16" Black Magpul Stk 1 Mag 30Rd MOE Handguard/Grip/Stock/Flip Sight/Trigger Guard A2 Front Sight and Flip Up Rear RM400-16B-EC

  • Accessories - 1 Mag
  • Action - Semi-automatic
  • Barrel Length - 16"
  • Capacity - 30Rd
  • Description - MOE Handguard/Grip/Stock/Flip Sight/Trigger Guard
  • Finish/Color - Black
  • Caliber - 223 Rem
  • Caliber - 556NATO
  • Grips/Stock - Magpul Stk
  • Manufacturer - Sig Sauer
  • Manufacturer part # - RM400-16B-EC
  • Model - M400
  • Sights - A2 Front Sight and Flip Up Rear
  • Type - AR

THE SIG M400 SERIES ENHANCED RIFLE, is designed for use in law enforcement, military operations, the sporting field, as well as competitive shooting. The SIG M400 is a true AR platform tactical rifle with unparalleled accuracy. A 16" chrome-lined and phosphate coated barrel provides superior corrosion resistance, and a 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability that users come to expect from SIG SAUER. This black version with black polymer Magpul MOE forend, grip and collapsible stock.

The Sig Sauer RM400-16B-EC ships standard with the following:   1 30rd mag

Availability: Out of Stock

We are not currently accepting back orders for this item. Please add the M400 Enhanced MOE in 5.56mm NATO, Sig Sauer part number RM400-16B-EC to your watch list to be notified when this item is available again.


Pricing and Payment Methods

In order to be competitive, our prices reflect a 3% discount for payment by cash, check, or money order. Other forms of payment will be subject to an additional $33.66 in processing fees. Arizona residents are subject to 8.3% sales tax.

Shipping Requirements

When purchasing a firearm or other restricted item, federal law requires that it MUST ship to a licensed dealer in your state. If you need assistance locating a dealer to have your firearm shipped to, please contact us or enter your zip code at the GunBroker FFL dealer network website.

NOTICE: Flat rate and free shipping only applies to the contiguous US. AK, HI, and other territories will incur additional shipping fees. Not all items can legally ship to all 50 states. Please be sure this item is legal in your location before placing an order. If in doubt, please contact us.

NOTICE: Our inventory can change rapidly. While we make every attempt to make sure the information on our website is correct, we can not guarantee that inventory statuses, titles, pictures, or descriptions on our site are entirely accurate. We reserve the right to cancel any order, including, but not limited to, orders for items with errors in the inventory status, price, or description. In the event that an order is cancelled, we will not charge you and we will return funds if payment has been sent.

AR-15 Rifles in Other Calibers from Sig Sauer

Tombstone Tactical
10011 N Metro Pkwy E.
Phoenix, AZ 85051