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BCG Parts

  • Firing Pin Retaining Pin for AR15 Firing Pin Retaining Pin for AR15

    Firing Pin Retaining Pin for AR15

    Mil-spec firing pin retaining pin. This little guy does an important job by holding the firing pin in place which holds the cam pin which holds the bolt. Don't try shooting without one installed even if Uncle Elmer says it's okay. I replace these things...

    $4.11
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  • Enhanced Power Extractor Spring

    Enhanced Power Extractor Spring

    Similar to a standard mil-spec extractor spring except this one is extra stiff. Recommended if you have a barrel 16" or longer, with a carbine length (9.75") gas system. The relatively shorter gas system on a longer barrel is harder on the extractor...

    $3.19
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  • Ejector Roll Pin Ejector Roll Pin

    Ejector Roll Pin

    A mil-spec ejector roll pin made from spring steel. It is recommended that all roll pins are replaced whenever removed. They are only a buck, yet are responsible for a pretty important job. They are easy to bend or deform which will reduce their spring...

    $1.35
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  • Gas Ring (Split Style) Gas Ring (Split Style)

    Gas Ring (Split Style)

    This trifecta of rings is designed to create some resistance (gas seal) between the bolt and bolt carrier for some reason, likely to impart magical powers to the bolt. That, or to unload pressure on the locking lugs before the bolt is rotated out of the...

    $1.92
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  • CNA Extra Power Ejector Spring

    CNA Extra Power Ejector Spring

    From Canadian National Arms, a super stiff ejector spring to give you extra positive ejection. They accomplish this by winding the spring with a taller helix so the uncompressed spring is 10% longer than usual. These springs seem quite hard to find in a...

    $4.31
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  • Extractor Spring Donut O-Ring for AR-15

    Extractor Spring Donut O-Ring for AR-15

    Similar in function to the Extractor Spring Insert, it is a tiny little soldier for helping to stabilize the extractor spring while acting as a stop for the Extractor when wide open. It also absorbs energy to act as a mini-damper and prevent the...

    $2.27
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  • Extractor Spring Insert Extractor Spring Insert

    Extractor Spring Insert

    The Extractor Spring can't do the job alone, it needs some backup. Enter the Extractor Spring Insert. A tiny but essential little soldier for helping the spring not collapse (be more consistent and stable) while also acting as a stop for the Extractor...

    $1.92
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  • Extractor Pin Extractor Pin

    Extractor Pin

    A mil-spec Extractor Pin acts as a pivot for the Extractor. The Extractor Pin is under constant shear force and is worked back and forth with every shot, so it may eventually wear out and need replacing. From a distance this may look like a roll pin,...

    $1.58
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  • Extractor (fits .233/5.56 and others) Extractor (fits .233/5.56 and others)

    Extractor (fits .233/5.56 and others)

    This is a mil-spec extractor for your bolt. It is designed to work with cartridges with a 0.45" case rim thickness. 7.62x39 has a rim thickness of about 0.059" so this is not an idea replacement for the long haul, however it will work for a good while...

    $22.96
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  • Ejector Spring Ejector Spring

    Ejector Spring

    Made from spring steel, this little guy has an important job to do. Springs are wear items and degrade over time. Failure to eject could be related to this spring, though other factors are more likely. Ready to drop in and go Mil-spec Made in an ISO...

    $1.35
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  • Gas Key Screw Gas Key Screw

    Gas Key Screw

    These socket head cap screws hold the Gas Key in place. These are pretty important parts that you may want to stake in place to prevent loosening. Some people will seal the screws in place with gasket-seal compound or a low-strength threadlocker such as...

    $2.96
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  • Extractor Spring Extractor Spring

    Extractor Spring

    Standard mil-spec extractor spring. Made from spring steel, this little guy has an important job to do and needs an Insert for backup. Springs are wear items and degrade over time. Failure to eject could be related to this spring, though other factors...

    $1.58
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  • Gas Key

    Gas Key

    The Gas Key is an important little guy. It catches the gas coming through the Gas Tube and transmits the gas force into the rest of the Bolt Carrier Group to cycle your gun. The gas key can be damaged if you drop your entire Bolt Carrier...

    $17.24
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  • Ejector Ejector

    Ejector

    Mil-spec ejector for your AR-15 bolt. This will work perfectly with several calibers and should be considered a wear item that will need to be replaced from time to time. Phosphate finish Made in an ISO 9001:2008 factory Mil Spec Weight:...

    $4.57
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  • Cam Pin

    Cam Pin

    Mil-spec Cam Pin to connect your bolt to the bolt carrier. It also has the job of rotating the bolt to engage/disengage with the Barrel Extension. These little guys come in all shapes and sizes but ours is the style used in an M16 style bolt meant for...

    $16.36
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  • Hard Chrome Firing Pin (5.56/.223/300BLK)

    Hard Chrome Firing Pin (5.56/.223/300BLK)

    Hard chrome coated stainless steel firing pin optimized for .223 and or 5.56 parent cases. It'll also work great with soft-primed commercial 7.62x39 ammo, it is not suitable for harder milsurp primers. Note that this is the original M16 version of the...

    $18.01
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  • Solid Firing Pin Retaining Pin for AR-15 Solid Firing Pin Retaining Pin for AR-15

    Solid Firing Pin Retaining Pin for AR-15

    The old-fashioned design of firing pin retaining pin, for if you want an authentic retro build or maybe you believe the old ways are the best ways.You get: (1) Solid firing pin retaining pin may be black or stainless Compatible with: AR-15 bolt carrier...

    $13.06
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  • Gas Key Screw, Threadlocking Gas Key Screw, Threadlocking

    Gas Key Screw, Threadlocking

    Similar to our standard Gas Key Screws, except the threads have been painted with a thread-locking goo that resists loosening from vibration. The compound is not permanent. Although you can re-use it, the holding power will reduce each time you unscrew...

    $3.76 - $4.34
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  • AR-308 Gas Ring AR-308 Gas Ring

    AR-308 Gas Ring

    This trifecta of rings is designed to create some resistance (gas seal) between the bolt and bolt carrier for some reason, likely to impart magical powers to the bolt. That, or to unload pressure on the locking lugs before the bolt is rotated out of the...

    $2.27
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  • Firing Pin Stainless Steel (5.56/.223/300BLK)

    Firing Pin Stainless Steel (5.56/.223/300BLK)

    Stainless steel firing pin optimized for .223 and or 5.56 parent cases. It'll also work great with soft-primed commercial 7.62x39 ammo, it is not suitable for harder milsurp primers. Note that this is the original M16 version of the firing pin which...

    $15.81
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  • Solid Firing Pin Retaining Pin for AR-308

    Solid Firing Pin Retaining Pin for AR-308

    The old-fashioned design of firing pin retaining pin, for if you want an authentic retro build or maybe you believe the old ways are the best ways.You get: (1) Solid firing pin retaining pin Compatible with: AR-10, AR-308 size bolt carrier groups Tools...

    $13.56
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  • CNA AR-308 Ejector Spring

    CNA AR-308 Ejector Spring

    You get: (1) Ejector spring Compatible with: AR-308-size boltsTools required: None Installation Tips: After installing, check that the ejector can compress all the way down by using a spent case under the ejector. If not you'll have to trim off one or...

    $6.13
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  • CNA AR-308 Ejector

    CNA AR-308 Ejector

    Mil-spec ejector for your AR-10, AR-308, DPMS-308, etc. bolt. This will work perfectly with several calibers and should be considered a wear item that will need to be replaced from time to time. Compatible with: Most AR-10/AR-308 bolt variants including...

    $6.87
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  • CNA AR-308 Extractor Pin

    CNA AR-308 Extractor Pin

    If you're having extraction issues that you can't resolve sometimes the fix is to just replace the whole kit n kaboodle (extractor, spring, and pin). Also handy to have a spare for just in case.You get: (1) Extractor pin Compatible with: Most AR-308 size...

    $3.02
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