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Fusion Firearms 1911 Mag-well Mainspring Housing Up to 24% Off w/ Free Shipping — 13 models

Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Silver, 1911-MSH-27-7
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Black, 1911-MSH-27-6
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Black, 1911-MSH-27-3
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Matte, 1911-MSH-27-1
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Black, 1911-MSH-27-12
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Polished, 1911-MSH-27-5
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Matte, 1911-MSH-27-13
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Silver, 1911-MSH-27-15
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Polished, 1911-MSH-27-8
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Polished, 1911-MSH-27-2
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Polished, 1911-MSH-27-14
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Silver, 1911-MSH-27-11
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Silver, 1911-MSH-27-7
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Black, 1911-MSH-27-6
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Black, 1911-MSH-27-3
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Matte, 1911-MSH-27-1
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Black, 1911-MSH-27-12
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Polished, 1911-MSH-27-5
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Matte, 1911-MSH-27-13
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Silver, 1911-MSH-27-15
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Polished, 1911-MSH-27-8
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Polished, 1911-MSH-27-2
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Polished, 1911-MSH-27-14
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Silver, 1911-MSH-27-11
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Silver, 1911-MSH-27-7
1 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Silver, 1911-MSH-27-7
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Black, 1911-MSH-27-6
2 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Black, 1911-MSH-27-6
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Black, 1911-MSH-27-3
3 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Black, 1911-MSH-27-3
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
4 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Matte, 1911-MSH-27-1
5 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Matte, 1911-MSH-27-1
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Black, 1911-MSH-27-12
6 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Black, 1911-MSH-27-12
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Polished, 1911-MSH-27-5
7 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Polished, 1911-MSH-27-5
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Matte, 1911-MSH-27-13
8 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Matte, 1911-MSH-27-13
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Silver, 1911-MSH-27-15
9 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Silver, 1911-MSH-27-15
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Polished, 1911-MSH-27-8
10 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Polished, 1911-MSH-27-8
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Polished, 1911-MSH-27-2
11 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Polished, 1911-MSH-27-2
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Polished, 1911-MSH-27-14
12 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Polished, 1911-MSH-27-14
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Silver, 1911-MSH-27-11
13 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Silver, 1911-MSH-27-11
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Silver, 1911-MSH-27-7
14 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Silver, 1911-MSH-27-7
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Black, 1911-MSH-27-6
15 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Black, 1911-MSH-27-6
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Black, 1911-MSH-27-3
16 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Black, 1911-MSH-27-3
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
17 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
18 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
19 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
20 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
21 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
22 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Matte, 1911-MSH-27-1
23 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Matte, 1911-MSH-27-1
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Black, 1911-MSH-27-12
24 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Black, 1911-MSH-27-12
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Polished, 1911-MSH-27-5
25 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Polished, 1911-MSH-27-5
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Matte, 1911-MSH-27-13
26 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Matte, 1911-MSH-27-13
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Silver, 1911-MSH-27-15
27 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Silver, 1911-MSH-27-15
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Polished, 1911-MSH-27-8
28 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Polished, 1911-MSH-27-8
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Polished, 1911-MSH-27-2
29 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Polished, 1911-MSH-27-2
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Polished, 1911-MSH-27-14
30 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Polished, 1911-MSH-27-14
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Silver, 1911-MSH-27-11
31 of 31 images
Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Silver, 1911-MSH-27-11

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Government Export Restriction Government Export Restriction
Questions & Answers
Will this fit the Springfield Emissary 45acp Manufacturer Answer

The Gov't Size magwells will fit any full size 1911 frame Thanks again Fusion Firearms

by Fusion Firearms, Manufacturer, September 24, 2025
Will this work on a Kimber ultra carry II? Manufacturer Answer

No I am sorry it will not

by Fusion Firearms, Manufacturer, May 8, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
looks good and works, but might need a little filing by Lex, Verified Owner, June 29, 2024
I bought this Mag-Well Mainspring Housing for my RIA 45 EFS. I thought it would be a simple drop-in upgrade with no trouble, for the most part, it was, but there was some filing that needed to be done on my part to make the part fit. It was not an is...
Read More...
1/1 found this helpful
Helpful Positive Review
Quality product by GAK, January 7, 2021
This is a quality product. Only one small statement, the screw needs to be very tight to make sure that the well stays in line with the mag hole. Once tight all lined up correctly and felt very solid. Just a touch of lock tight and no problems.
1/2 found this helpful
Helpful Positive Review
Fusion Firearm 1911 Mag-Well by Mr. Byrd, Verified Owner, December 21, 2020
Easy to install onto my government RIA 1911, however you'll need some Loctite to secure the end screw. If the mag-well is slightly lose then magazine won't freely fall; so ensure that the well is straighten and affixed to the housing.
1/1 found this helpful
Helpful Negative Review
Will need much fitting by CSW, Verified Owner, July 16, 2024
Installing this magwell will require much fitting. Definitely not drop in. Gaps at the well. MSH negated my grip safety. Will need much filing to fit correctly. Would recommend spending the extra money on a Nighthawk.
1/1 found this helpful
Most Recent Reviews
Fusion mag well... by Generalissimo, Verified Owner, August 26, 2025
This magwell fit with no slop or binding...slid right in. The quality is excellent and looks great on the 1911 pistol I added it to. The price was more than fair. Anyone should be happy with this product.
Most Recent Reviews
fuison firearms 1911 magwell mainspring housing by Richard Kramer, Verified Owner, May 2, 2025
Great looking functions perfect easy installation perfect finish
Read All 20 Reviews

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Product Info for Fusion Firearms 1911 Mag-well Mainspring Housing

These are Top Quality Professional Series Parts; Made from the best materials and processes available in today's market. 2 piece Dovetail base well with set screw. This is a Pro-Series Chain-link pattern mainspring housing. All Machined from Stainless steel bar stock and great looking and feeling cut chain-link pattern. These are as nice as they get.image

Specifications for Fusion Firearms 1911 Mag-well Mainspring Housing:

Manufacturer: Fusion Firearms
Fabric/Material: Carbon Steel
Gun Make: 1911 Platform
Condition: New

Package Contents:

  • Fusion Firearms 1911 Mag-well Mainspring Housing

What firearm models does the manufacturer say Fusion Firearms 1911 Mag-well Mainspring Housing is compatible with?

The manufacturer suggests that Fusion Firearms 1911 Mag-well Mainspring Housing is compatible with Colt 1911 Government 5in, Colt 1911 Officer

Fusion Firearms 1911 Mag-well Mainspring Housing Orderable Models

List of Orderable Models

  • Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Black, 1911-MSH-27-6 , MPN: 1911-MSH-27-6 , UPC: 3073841 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-6
  • Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Black, 1911-MSH-27-3 , MPN: 1911-MSH-27-3 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-3
  • Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Silver, 1911-MSH-27-7 , MPN: 1911-MSH-27-7 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-7
  • Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Matte, 1911-MSH-27-4 , MPN: 1911-MSH-27-4 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-4
  • Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Matte, 1911-MSH-27-1 , MPN: 1911-MSH-27-1 , UPC: 3073847 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-1
  • Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Black, 1911-MSH-27-12 , MPN: 1911-MSH-27-12 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-12
  • Fusion Firearms 1911 Mag-well Mainspring Housing Gov Chain Link, Polished, 1911-MSH-27-5 , MPN: 1911-MSH-27-5 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-5
  • Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Matte, 1911-MSH-27-13 , MPN: 1911-MSH-27-13 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-13
  • Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Silver, 1911-MSH-27-15 , MPN: 1911-MSH-27-15 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-15
  • Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Polished, 1911-MSH-27-8 , MPN: 1911-MSH-27-8 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-8
  • Fusion Firearms 1911 Mag-well Mainspring Housing Gov Checkered, Polished, 1911-MSH-27-2 , MPN: 1911-MSH-27-2 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-2
  • Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Silver, 1911-MSH-27-11 , MPN: 1911-MSH-27-11 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-11
  • Fusion Firearms 1911 Mag-well Mainspring Housing Officer Chain Link, Polished, 1911-MSH-27-14 , MPN: 1911-MSH-27-14 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-14

Fusion Firearms 1911 Mag-well Mainspring Housing Unavailable & Discontinued Models

List of Unorderable Models

  • Fusion Firearms 1911 Mag-well Mainspring Housing Gov Plain, Black, 1911-MSH-27-9 , MPN: 1911-MSH-27-9 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-9
  • Fusion Firearms 1911 Mag-well Mainspring Housing Officer Checkered, Matte, 1911-MSH-27-10 , MPN: 1911-MSH-27-10 , Code: 3QO-MGW-FF1911MW-1911-MSH-27-10
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Last updated 2026-06-24 UTC.