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Questions & Answers
can it be fired while folded

Yes, sigs fold to the left, not blocking the ejection port.

by Mike, Verified Owner, February 6, 2022
Gun Type:
Carbine
Gun Make:
Universal
Gun Model:
Universal
Color:
Black
Additional Features:
6.25In Offset Extension Arm
Included Accessories:
Minimalist Aluminum Butt-Plate
Condition:
New
Stock/Brace Material:
6061-T6 Aluminum
Attachment Type:
Sig Hinge
Fabric/Material:
6061-T6 Aluminum

Code: 69H-RSF-MD7SG-MS-H3-6-25-OFF-BP1

MPN: MS-H3-6.25-OFF-BP1

Product No Longer Available

Product Info for A3 Industries Modular Folding Stock w/ SIG Mount

A3 Industries is proud to release our Modular Folding Arm Stock system for the popular SIG line of MPX/MCX firearms. This system is designed from the ground up to provide modularity in style, form, and function. The proven Sig hinge (provided) utilizes a positive spring-lock for both the open and closed position, allowing the user to quickly release the brace from either position.image

NOTE: This Modular folder uses the OE Sig hinge. Due to the small offset of the Sig hinge most buttstocks rest against the side of the firearm when folded.

Features of A3 Industries Modular Folding Stock w/ SIG Mount

  • Modular design for individual personalization
  • Multiple lengths available
  • Offset extension mounts in 4 different configurations
  • Positively locks in both the open and folded position
  • 6061 and 7075 construction with Type II low gloss anodized finish
  • Can be configured with multiple buttstock variations

Package Contents:

  • A3 Industries Modular Folding Stock w/ SIG Mount

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A3 Industries Modular Folding Stock w/ SIG Mount Unavailable & Discontinued Models

List of Unorderable Models

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  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 8.625In Straight Extension Arm, Minimalist Aluminum Butt-Plate, Black, MS-H3-8.625-STR-BP1 , MPN: MS-H3-8.625-STR-BP1 , Code: 69H-RSF-MD7SG-MS-H3-8-625-STR-BP1
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  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 8.625In Offsett Extension Arm, Minimalist Aluminum Butt-Plate, Black, MS-H3-8.625-OFF-BP1 , MPN: MS-H3-8.625-OFF-BP1 , Code: 69H-RSF-MD7SG-MS-H3-8-625-OFF-BP1
  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 7.75In Straight Extension Arm, Minimalist Aluminum Butt-Plate, Black, MS-H3-7.75-STR-BP1 , MPN: MS-H3-7.75-STR-BP1 , Code: 69H-RSF-MD7SG-MS-H3-7-75-STR-BP1
  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 8.25In Offset Extension Arm, Minimalist Aluminum Butt-Plate, Black, MS-H3-8.25-OFF-BP1 , MPN: MS-H3-8.25-OFF-BP1 , Code: 69H-RSF-MD7SG-MS-H3-8-25-OFF-BP1
  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 8.625In Straight Extension Arm, A3T Aluminum Butt-Plate With Rubber Butt-Pad, Black, MS-H3-8.625-STR-BP2 , MPN: MS-H3-8.625-STR-BP2 , Code: 69H-RSF-MD7SG-MS-H3-8-625-STR-BP2
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  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 7.00In Offset Extension Arm, A3T Aluminum Butt-Plate With Rubber Butt-Pad, Black, MS-H3-7.00-OFF-BP2 , MPN: MS-H3-7.00-OFF-BP2 , Code: 69H-RSF-MD7SG-MS-H3-7-00-OFF-BP2
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  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 6.25In Offset Extension Arm, A3T Aluminum Butt-Plate With Rubber Butt-Pad, Black, MS-H3-6.25-OFF-BP2 , MPN: MS-H3-6.25-OFF-BP2 , Code: 69H-RSF-MD7SG-MS-H3-6-25-OFF-BP2
  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 7.75In Straight Extension Arm, A3T Aluminum Butt-Plate With Rubber Butt-Pad, Black, MS-H3-7.75-STR-BP2 , MPN: MS-H3-7.75-STR-BP2 , Code: 69H-RSF-MD7SG-MS-H3-7-75-STR-BP2
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  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 6.25In Straight Extension Arm, Polymer Butt-Plate With Magpul v2 Rubber Butt-Pad, Black, MS-H3-6.25-STR-BP4 , MPN: MS-H3-6.25-STR-BP4 , Code: 69H-RSF-MD7SG-MS-H3-6-25-STR-BP4
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  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 6.25In Straight Extension Arm, Polymer Butt-Plate With Magpul v1 Rubber Butt-Pad, Black, MS-H3-6.25-STR-BP3 , MPN: MS-H3-6.25-STR-BP3 , Code: 69H-RSF-MD7SG-MS-H3-6-25-STR-BP3
  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 6.25In Offset Extension Arm, Polymer Butt-Plate With Magpul v2 Rubber Butt-Pad, Black, MS-H3-6.25-OFF-BP4 , MPN: MS-H3-6.25-OFF-BP4 , Code: 69H-RSF-MD7SG-MS-H3-6-25-OFF-BP4
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  • A3 Industries Modular Folding Stock, Sig Hinge Mount, 7.75In Straight Extension Arm, Polymer Butt-Plate With Magpul v1 Rubber Butt-Pad, Black, MS-H3-7.75-STR-BP3 , MPN: MS-H3-7.75-STR-BP3 , Code: 69H-RSF-MD7SG-MS-H3-7-75-STR-BP3
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