We don’t sell firearms or ammo·Prices observed from retailers when connected·Field notes · click out to buy
SIG Sauer RM40016BTRDCO M400 Tread CO Compliant 223 Rem,5.56x45mm NATO 16" 10+1 Black Hard Coat Anodized 6 Position Magpul SL-K Stock
Sig Sauer

SIG Sauer RM40016BTRDCO M400 Tread CO Compliant 223 Rem,5.56x45mm NATO 16" 10+1 Black Hard Coat Anodized 6 Position Magpul SL-K Stock

UPC 00798681632961

Compare prices

1 offer · 0 in stock · sorted by best price
RetailerPriceStockLast checkedDeal
East Valley Tactical$907.23Out of stock31m agoGo to deal

Prices and stock are from each retailer's latest check and can change. Price Dope may earn a commission from retailer links. Disclosure

Description

RM400-16B-TRD-CO

Specs

BrandSig Sauer
CategoryRifle · Firearms
Caliber5.56 NATO
UPC00798681632961
Capacity10+1
Weight7 lb
Oal30.80"
HandAmbidextrous
GripsBlack Polymer
ModelM400
Twist1:8"
ActionSemi-Auto
FinishBlack
MuzzleThree Chamber Compensator
SeriesTread *CO Compliant
SightsOptic Ready
TriggerSingle-Stage
Magazine1 10 rd.
HandguardsM-LOK Free-Float
Max_capacity10
Stock_finishBlack
Weight_range7 lbs to 7.99 lbs
Barrel_finishBlack
Barrel_length16"
Similar_itemsRIT223
Stock_materialSynthetic
Receiver_finishBlack Hard Coat Anodized
Receiver_materialAluminum
Stock_descriptionAdjustable Telescopic
Barrel_descriptionStainless Steel Ported
Metal_finish_groupBlued/Black
Stock_finish_groupBlack
Barrel_length_range16" to 16.99"

Report a wrong product matchBrowse firearms

D.O.P.E.Price history

Lowest price across connected retailers, from every price check we've recorded.

Current best
$907.23
Low
$907.23
Oct 8, 2026
High
$907.23
Oct 8, 2026
Tracking since
Oct 8, 2026
One price check so far ($907.23 on Oct 8, 2026). The chart fills in as retailers are re-checked.
Recent price checks (1)
DateRetailerPriceStock
Oct 8, 2026, 5:15 PM PTEast Valley Tactical$907.23Out of stock

Similar rifles in 5.56 NATO

All rifles →

More from Sig Sauer

All Sig Sauer →

Related guides

$907.23
East Valley Tactical
Go to deal