Answers for Will this stock fit a Sig M400 TREAD Pistol? Looking for a folding stock to fit the TREAD.

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SIG SAUER + Gun Parts Sig Sauer Gun Parts SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK Q&A Question - Will this stock fit a Sig M400 TREAD Pistol? Looking fo SIG SAUER + Gun Parts Sig Sauer Gun Parts + Rifle Parts Sig Sauer Rifle Parts + Rifle Stocks Sig Sauer Rifle Stocks SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK Q&A Question - Will this stock fit a Sig M400 TREAD Pistol? Looking fo SIG SAUER + Gun Parts Sig Sauer Gun Parts + Rifle Parts Sig Sauer Rifle Parts SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK Q&A Question - Will this stock fit a Sig M400 TREAD Pistol? Looking fo

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SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK

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Answered by Potatoes, guest, from MI, United States, on June 18, 2021

No, the M400 and MCX/MPX have and run two different BCGs. There is no buffer tube.

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SIG SAUER + Gun Parts Sig Sauer Gun Parts SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK Q&A Question - Will this stock fit a Sig M400 TREAD Pistol? Looking fo SIG SAUER + Gun Parts Sig Sauer Gun Parts + Rifle Parts Sig Sauer Rifle Parts + Rifle Stocks Sig Sauer Rifle Stocks SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK Q&A Question - Will this stock fit a Sig M400 TREAD Pistol? Looking fo SIG SAUER + Gun Parts Sig Sauer Gun Parts + Rifle Parts Sig Sauer Rifle Parts SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK SIG SAUER MCX/MPX Side-Folding M4 Style Stock Black - All NFA Rules Apply STKXFOLDM4BLK Q&A Question - Will this stock fit a Sig M400 TREAD Pistol? Looking fo

Last updated 2025-11-12 UTC.