What is a Sig Sauer M400 worth?

Based on 8 completed auction sales, the Sig Sauer M400 has an average market value of $635. Prices range from $415 to $825.

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: 634.87375 USD

Confirmed (8 sales · all variants)Low ConfidenceUpdated Apr 15

$635market value

GUNNY VALUATION

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Market Average · baseline

$635

30-Day Trend

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Insufficient data

Price Range · 12mo

$415 – $825

12-month range

Sales Tracked

0

100% sell-through

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$430current bid

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Price Trend39 sales

5 sales

Active Listings

Best Buys

Sig Sauer M400 Thread Semi-Auto Pistol 5.56 NATO 1…$41534.6%

Sig Sauer M400 Tread 5.56 Nato$42333.4%

Sig Sauer M400 5.56 NATO 1/7 16" Semi-Auto Rifle B…$45628.2%

Overpaid

Sig Sauer M400 Pro 16”$1,800+183.5%

Sig Sauer M400 DH3 AR-15 Rifle W/ Vortex Scope & H…$1,775+179.6%

Sig Sauer M400 SDI VTAC - 5.56 NATO - Viking Tacti…$1,225+93.0%

Recent Sales

39 results

Title	Sold Price	vs Market	Date	Bids
Sig Sauer M400 5.56 NATO AR-15 w/ Aero Atlas R-One Upper!	$753	+18.6%	Apr 13, 2026	14
Sig Sauer M400 SDI VTAC - 5.56 NATO - Viking Tactical - AR15 - AR 15 - C	$1,225	+93.0%	Mar 30, 2026	31
Sig M400 SDI 11.5	$780	+22.9%	Mar 29, 2026	12
Sig Sauer SIGM400 AR Pistol 5.56 11.5" BBL 1 mag CAMO	$750	+18.1%	Mar 29, 2026	1
Sig Sauer M400 5.56MM 11.5" Semi-Automatic AR-15 Pistol	$725	+14.2%	Mar 28, 2026	14
Sig Sauer M400 5.56 16"	$699	+10.1%	Dec 27, 2024	1
SIG SAUER M400 TREAD PREDATOR	$655	+3.2%	Nov 29, 2024	2
Sig M400 pistol	$649	+2.2%	Nov 18, 2024	1
SIG SAUER M400 GRAY/COYOTE 5.56 SNAKEBITE SPECIAL EDITIONAFTERMARKET	$849	+33.7%	Nov 16, 2024	1
Sig Sauer M400 (5.56 NATO) Semi-Automatic Rifle 16"	$633	-0.3%	Nov 14, 2024	14

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