What is a Sig Sauer M400 worth?

Based on 24 completed auction sales, the Sig Sauer M400 has an average market value of $663. Prices range from $456 to $1,800.

Is now a good time to buy a Sig Sauer M400?

Check Gunny for current Sig Sauer M400 listings scored against historical market data.

Name: Sig Sauer M400
Brand: Sig Sauer
Price: 663.165 USD

Sig Sauer M400 Confirmed (24 sales)

$663market value

Updated Apr 9

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Historical Price Range

Low $456Avg $663High $1,800

Market Average · all-time

$663

30-Day Trend

—

Historical Low

$456

Historical High

$1,800

100%

Sell-Through Rate

of listings result in a sale

$1,800

Auction Record

Set Sep 18, 2024

Price Trend20 sales

Recent Sales

20 results

Title	Sold Price	vs Current Market	Date	Bids
Sig Sauer M400 5.56 NATO AR-15 w/ Aero Atlas R-One Upper!	$465	-29.9%	Apr 13, 2026	14
Sig Sauer M400 SDI VTAC - 5.56 NATO - Viking Tactical - AR15 - AR 15 - C	$1,175	+77.2%	Mar 30, 2026	31
Sig M400 SDI 11.5	$640	-3.5%	Mar 29, 2026	12
Sig Sauer SIGM400 AR Pistol 5.56 11.5" BBL 1 mag CAMO	$750	+13.1%	Mar 29, 2026	1
Sig Sauer M400 5.56MM 11.5" Semi-Automatic AR-15 Pistol	$710	+7.1%	Mar 28, 2026	14
Sig Sauer M400 5.56 16"	$699	+5.4%	Dec 27, 2024	1
SIG SAUER M400 TREAD PREDATOR	$655	-1.2%	Nov 29, 2024	2
Sig M400 pistol	$649	-2.1%	Nov 18, 2024	1
SIG SAUER M400 GRAY/COYOTE 5.56 SNAKEBITE SPECIAL EDITIONAFTERMARKET	$849	+28.0%	Nov 16, 2024	1
Sig Sauer M400 (5.56 NATO) Semi-Automatic Rifle 16"	$633	-4.5%	Nov 14, 2024	14
Sig Sauer M400 AR-15 5.56! This is the Original Model, M400-M400-M400-M400	$800	+20.6%	Nov 13, 2024	1
Sig Sauer M400 B5 Series Gray	$650	-2.0%	Nov 9, 2024	1
PENNY! SIG M400 AR15 5.56 W/ 16" BARREL!	$636	-4.1%	Oct 27, 2024	25
Sig Sauer M400 Thread Semi-Auto Pistol 5.56 NATO 11.5" Barrel EUC No Res 99	$415	-37.4%	Oct 26, 2024	12
Sig Sauer M400 5.56MM Penny Bid NO RESERVE	$550	-17.1%	Oct 20, 2024	16
Sig Sauer, SIG M400, 5.56 NATO, AR15 Platform, Semi Automatic Rifle	$473	-28.6%	Oct 6, 2024	16
Sig Sauer M400 DH3 AR-15 Rifle W/ Vortex Scope & Holosun Red Dot .223 Wylde	$1,775	+167.6%	Sep 26, 2024	14
Sig Sauer M400 5.56 NATO Very Good Condition Penny Start!	$620	-6.5%	Sep 23, 2024	26
SIG M400 Tread 5.56 NATO	$505	-23.9%	Sep 22, 2024	2
Sig Sauer M400 Snakebite SE (5.55 NATO) Semi-Automatic Rifle 16"	$755	+13.8%	Sep 19, 2024	15