1. Kimber Mainspring Housing Flat with Oversized Magazine Well 1911 Government, Commander Checkered ...
    Kimber Mainspring Housing Flat with Oversized Magazine Well 1911 Go... 4.8 (41 Reviews)
    $82.99 - $89.99
    Available View More Options
  2. Ed Brown Mainspring Housing Flat with Drop-In Maxi-Well 1911 Government, Commander Checkered 25 LPI
    Ed Brown Mainspring Housing Flat with Drop-In Maxi-Well 1911 Govern... 4.6 (94 Reviews)
    $79.99
    Available View More Options
  3. Ed Brown Mainspring Housing Flat with Drop-In Maxi-Well 1911 Government, Commander Snakeskin
    Ed Brown Mainspring Housing Flat with Drop-In Maxi-Well 1911 Govern... 4.8 (22 Reviews)
    $79.99
    Available View More Options
  4. Ed Brown Mainspring Housing Arched 1911 Government, Commander Grooved 20 LPI
    Ed Brown Mainspring Housing Arched 1911 Government, Commander Groov... 4.8 (48 Reviews)
    $41.99
    Available View More Options
  5. Swenson Mainspring Housing Flat Checkered with Magazine Well 1911 Government, Commander
    Swenson Mainspring Housing Flat Checkered with Magazine Well 1911 G...
    $69.99
    Available View More Options
  6. Ed Brown Mainspring Housing Flat 1911 Government, Commander Chainlink
    Ed Brown Mainspring Housing Flat 1911 Government, Commander Chainlink 4.8 (55 Reviews)
    $46.99
    Available View More Options
  7. Colt Mainspring Housing Flat 1911 Government, Commander Grooved
    Colt Mainspring Housing Flat 1911 Government, Commander Grooved 4.6 (27 Reviews)
    $7.99 - $47.49
    Available View More Options
  8. Ed Brown Mainspring Housing Flat with Drop-In Maxi-Well 1911 Government, Commander Chainlink
    Ed Brown Mainspring Housing Flat with Drop-In Maxi-Well 1911 Govern... 4.6 (13 Reviews)
    $77.99
    Available View More Options
  9. Swenson Mainspring Housing Flat Checkered 1911 Government, Commander Stainless Steel
    Swenson Mainspring Housing Flat Checkered 1911 Government, Commande...
    $34.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  10. Ed Brown Mainspring Housing Arched with Drop-In Maxi-Well 1911 Government, Commander
    Ed Brown Mainspring Housing Arched with Drop-In Maxi-Well 1911 Gove... 4.7 (3 Reviews)
    $74.99
    Available View More Options
  11. Nighthawk Custom Mainspring Housing and Magwell 1911 Government, Commander 1-Piece 20 LPI Checker...
    Nighthawk Custom Mainspring Housing and Magwell 1911 Government, Co... 4.1 (7 Reviews)
    $149.99
    Available
  12. Springfield Armory Mainspring Housing Flat 1911 Government, Commander Checkered 20 LPI Blue
    Springfield Armory Mainspring Housing Flat 1911 Government, Command... 4.6 (43 Reviews)
    $26.99
    Available
  13. Nighthawk Custom Mainspring Housing Flat with Magazine Well 1911 Government, Commander Scalloped ...
    Nighthawk Custom Mainspring Housing Flat with Magazine Well 1911 Go... 4.5 (11 Reviews)
    $79.99
    Available
  14. Swenson Mainspring Housing Flat Checkered with Magazine Well 1911 Officer
    Swenson Mainspring Housing Flat Checkered with Magazine Well 1911 O...
    $69.99
    Available View More Options
  15. Colt Mainspring Housing Flat Colt Gold Cup Grooved Matte Stainless Steel
    Colt Mainspring Housing Flat Colt Gold Cup Grooved Matte Stainless ... 5.0 (9 Reviews)
    $44.99
    Available
  16. Ed Brown Mainspring Housing Flat 1911 Government, Commander Checkered 25 LPI
    Ed Brown Mainspring Housing Flat 1911 Government, Commander Checker... 4.9 (18 Reviews)
    $62.99
    Available View More Options
  17. Swenson Mainspring Housing with Lanyard Loop Holes Flat Smooth 1911 Government, Commander Carbon ...
    Swenson Mainspring Housing with Lanyard Loop Holes Flat Smooth 1911...
    $26.99
    Available
  18. Wilson Combat Bullet Proof Mainspring Housing Magazine Well 1-Piece 1911 Government Commander 30L...
    Wilson Combat Bullet Proof Mainspring Housing Magazine Well 1-Piece... 4.0 (2 Reviews)
    $184.99 - $189.99
    Mixed Availability View More Options
  19. Ed Brown Mainspring Housing Flat with Drop-In Maxi-Well 1911 Government, Commander Checkered Skip...
    Ed Brown Mainspring Housing Flat with Drop-In Maxi-Well 1911 Govern... 5.0 (7 Reviews)
    $87.99
    Available View More Options
  20. Wilson Combat Mainspring Housing Flat 1911 Government, Commander Aluminum
    Wilson Combat Mainspring Housing Flat 1911 Government, Commander Al... 4.4 (7 Reviews)
    $34.99
    Available
  21. Ed Brown Mainspring Housing Flat 1911 Government, Commander Smooth
    Ed Brown Mainspring Housing Flat 1911 Government, Commander Smooth 4.7 (23 Reviews)
    $33.99
    Available View More Options
  22. Ed Brown Mainspring Housing Bobtail 1911 Government, Commander Checkered 25 LPI
    Ed Brown Mainspring Housing Bobtail 1911 Government, Commander Chec... 5.0 (4 Reviews)
    $74.99
    Available View More Options
  23. Ed Brown Mainspring Housing Flat 1911 Government, Commander Snakeskin
    Ed Brown Mainspring Housing Flat 1911 Government, Commander Snakeskin 4.8 (10 Reviews)
    $59.99
    Available View More Options
  24. Wilson Combat Mainspring Housing Flat 1911 Government, Commander Checkered 30 x 30 LPI
    Wilson Combat Mainspring Housing Flat 1911 Government, Commander Ch... 4.4 (29 Reviews)
    $46.99 - $48.99
    Mixed Availability View More Options
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