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Bolt Assemblies For Custom Rifle Projects

Bolt assemblies for custom rifle projects are essential components for builders seeking precision and reliability in their firearms. Whether upgrading an existing rifle or crafting a unique build from the ground up, selecting the right bolt assembly ensures smooth operation and optimal performance. Explore a range of options tailored to meet the demands of custom rifle enthusiasts, offering compatibility with various calibers and configurations. Find the perfect fit to complete your next custom rifle project with confidence.

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  1. SIG MCX-SPEAR LT 16" 5.56 NATO BARREL AND GAS BLOCK ASSEMBLY
    SIG MCX-SPEAR LT 16" 5.56 NATO BARREL AND GAS BLOCK ASSEMBLY
    5
    (8)
    $899.99
    FREE SHIPPING ON ORDERS OF $100+
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  2. SIG MCX-SPEAR LT 11.5-INCH 5.56 NATO BARREL AND GAS BLOCK ASSEMBLY
    SIG MCX-SPEAR LT 11.5-INCH 5.56 NATO BARREL AND GAS BLOCK ASSEMBLY
    5
    (5)
    $899.99
    FREE SHIPPING ON ORDERS OF $100+
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  3. SIG MCX BOLT ASSY, TAPERED LUG, 5.56/.300
    SIG MCX BOLT ASSY, TAPERED LUG, 5.56/.300
    5
    (5)
    $199.99
    FREE SHIPPING ON ORDERS OF $100+
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  4. SIG MCX-SPEAR LT 5.56/300BLK BOLT CARRIER ASSEMBLY
    SIG MCX-SPEAR LT 5.56/300BLK BOLT CARRIER ASSEMBLY
    4
    (3)
    Out of stock
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  5. SIG MCX-SPEAR LT 5.56/300BLK COMPLETE CARRIER GROUP
    SIG MCX-SPEAR LT 5.56/300BLK COMPLETE CARRIER GROUP
    5
    (3)
    $699.99
    FREE SHIPPING ON ORDERS OF $100+
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  6. MCX VIRTUS PISTON ASSEMBLY, 16IN BARREL - 5.56 NATO
    MCX VIRTUS PISTON ASSEMBLY, 16IN BARREL - 5.56 NATO
    3
    (2)
    $299.99
    FREE SHIPPING ON ORDERS OF $100+
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  7. CROSS BOLT HEAD ASSEMBLY
    CROSS BOLT HEAD ASSEMBLY
    5
    (1)
    $199.99
    FREE SHIPPING ON ORDERS OF $100+
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  8. SIG MCX SPEAR 13-INCH 7.62 NATO BARREL AND GAS BLOCK ASSEMBLY
    SIG MCX SPEAR 13-INCH 7.62 NATO BARREL AND GAS BLOCK ASSEMBLY
    5
    (1)
    $1499.99
    FREE SHIPPING ON ORDERS OF $100+
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  9. SIG MCX-RATTLER LT 6.75-INCH 300BLK BARREL AND GAS BLOCK ASSEMBLY
    SIG MCX-RATTLER LT 6.75-INCH 300BLK BARREL AND GAS BLOCK ASSEMBLY
    5
    (1)
    $899.99
    FREE SHIPPING ON ORDERS OF $100+
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  10. ASSY, CARRIER FREE ROTATION, FLAT LUG BOLT, SEMI, WORLD
    ASSY, CARRIER FREE ROTATION, FLAT LUG BOLT, SEMI, WORLD
    5
    (1)
    $599.99
    FREE SHIPPING ON ORDERS OF $100+
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  11. SIG MCX-SPEAR LT 7.62X39 BOLT CARRIER ASSEMBLY
    SIG MCX-SPEAR LT 7.62X39 BOLT CARRIER ASSEMBLY
    $499.99
    FREE SHIPPING ON ORDERS OF $100+
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  12. BOLT ASSY
    BOLT ASSY
    $179.99
    FREE SHIPPING ON ORDERS OF $100+
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  13. MCX VIRTUS PISTON ASSEMBLY, 14IN BARREL - 5.56 NATO
    MCX VIRTUS PISTON ASSEMBLY, 14IN BARREL - 5.56 NATO
    $299.99
    FREE SHIPPING ON ORDERS OF $100+
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  14. SIG MCX-SPEAR LT 7.62X39 TAPERED LUG BOLT ASSEMBLY
    SIG MCX-SPEAR LT 7.62X39 TAPERED LUG BOLT ASSEMBLY
    $199.99
    FREE SHIPPING ON ORDERS OF $100+
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  15. BOLT, FPS, TAPERED LUG
    BOLT, FPS, TAPERED LUG
    $179.99
    FREE SHIPPING ON ORDERS OF $100+
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  16. SIG MCX-SPEAR LT 7.62X39 COMPLETE CARRIER GROUP
    SIG MCX-SPEAR LT 7.62X39 COMPLETE CARRIER GROUP
    $699.99
    FREE SHIPPING ON ORDERS OF $100+
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  17. BOLT CARRIER AND KEY ASSY, M400
    BOLT CARRIER AND KEY ASSY, M400
    $238.99
    FREE SHIPPING ON ORDERS OF $100+
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  18. M400 5.56 BOLT ASSEMBLY KIT
    M400 5.56 BOLT ASSEMBLY KIT
    $179.99
    FREE SHIPPING ON ORDERS OF $100+
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  19. MCX Rattler 5.5" Caliber exchange kit - 5.56NATO
    MCX Rattler 5.5" Caliber exchange kit - 5.56NATO
    5
    (10)
    $499.99$699.99
    FREE SHIPPING ON ORDERS OF $100+
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  20. SIG MCX BOLT CATCH, PINS, SPRINGS
    SIG MCX BOLT CATCH, PINS, SPRINGS
    5
    (5)
    $19.99
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  21. CARRIER ASSEMBLY, MPX, FREE ROTATION, CARRIAGE ASSEMBLY, BOLT, FIRING PIN, CAM PIN  
    CARRIER ASSEMBLY, MPX, FREE ROTATION, CARRIAGE ASSEMBLY, BOLT, FIRING PIN, CAM PIN  
    4
    (5)
    Out of stock
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  22. SIG MCX BARREL CLAMP ASSEMBLY
    SIG MCX BARREL CLAMP ASSEMBLY
    5
    (5)
    $49.99
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  23. SIG 716G2 FIRING PIN ASSEMBLY
    SIG 716G2 FIRING PIN ASSEMBLY
    4
    (4)
    $49.99
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  24. SIG MCX SPEAR LT 9-INCH 300BLK BARREL AND GAS BLOCK ASSEMBLY
    SIG MCX SPEAR LT 9-INCH 300BLK BARREL AND GAS BLOCK ASSEMBLY
    5
    (3)
    $899.99
    FREE SHIPPING ON ORDERS OF $100+
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