Sig Sauer M400 Price History & Deals

The Sig Sauer M400 typically sells for around $649 on r/gundeals, placing it in the mid-range segment. Across 5 tracked deals, prices have ranged from $400 to $750, with most transactions landing between $499 and $650. That's a 59% spread between the lowest and highest prices, meaning timing and retailer selection matter significantly for this product.

The best prices on Sig Sauer M400 have come from Aimsurplus, averaging $516 across 3 deals — roughly $73 below the overall average. Historically, September tends to offer the lowest prices, averaging $524 — about $65 below the yearly average.

If you're cross-shopping, the Atrius Super Safety averages $138 across 10 deals (77% less), while the Daniel Defense MK18 averages $830 across 6 deals. Deal frequency and pricing history for each can be found on their respective product pages.

• Community favorite: The highest-rated Sig Sauer M400 deal had 50 upvotes at $400 from Aimsurplus — r/gundeals clearly thought that was a standout price.
• Price range: Sig Sauer M400 prices vary widely — from $400 to $750 (a 59% spread). Patience and alerts pay off here.
• Deal frequency: Sig Sauer M400 deals are relatively rare — about every 35 days. When one shows up at a good price, act fast.
• Target price: Aim for under $560 — that puts you in "good deal" territory.