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SIG SAUER Bolt Carrier Assy, M400

SIG SAUER Bolt Carrier Assy, M400 - 1700531-R
SIG SAUER Bolt Carrier Assy, M400 - 1700531-R
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SIG SAUER Bolt Carrier Assy, M400 - 1700531-R

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Questions & Answers
Customer Reviews
Helpful Positive Review
photo is wrong ...shows a gas piston BCG by D Mac, Verified Owner, February 10, 2018
I ordered a BCG for a M400 and that's what I got ....A semi-auto BCG for my M400 in the typical SIG plastic bag ...Chrome lined carrier and key ....Key was properly staked ....Good looking BCG ....No SIG markings ....No MPI marking on bolt
10/10 found this helpful
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Product Discontinued by Manufacturer

SIG SAUER Bolt Carrier Assy, M400 has been discontinued by SIG SAUER and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, Bolt Carrier Groups yourself to try and find the perfect replacement for you!

Product Info for SIG SAUER Bolt Carrier Assy, M400

Bolt Carrier Assy, M400image

Package Contents:

  • SIG SAUER Bolt Carrier Assy, M400

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SIG SAUER Bolt Carrier Assy, M400 Unavailable & Discontinued Models

List of Unorderable Models

  • SIG SAUER Bolt Carrier Assy, M400 - 1700531-R , MPN: 1700531-R , UPC: 798681490363 , Code: SD9-BCG-SS1700531R-1700531-R
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Last updated 2026-09-17 UTC.