Sig Sauer M400 Tread

The Sig Sauer M400 TREAD row now follows the current TREAD V2 SKU instead of mixing older V1 review details with newer spec language. SIG's 2025 price list identifies RM400-16B-TRD-V2 as the current TREAD V2 rifle, with MSRP at $1,099.99.

The catalog role is simple: a factory SIG AR-15 with a 16-inch 5.56 barrel, aluminum M-LOK handguard, adjustable stock, and standard STANAG magazine path. It sits above the lowest-cost ARs but below SIG's MCX line, making it a sensible comparison point against the Sport III, Aero M4E1 configurations, and other mid-value 16-inch rifles.

Future price tracking should distinguish TREAD V2 from older TREAD listings, especially when a retailer listing uses the older RM400-16B-TRD SKU or older review copy.