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bolt carrier

A bolt is the part of a repeating, breech-loading firearm that blocks the rear opening (breech) of the barrel chamber while the propellant burns, and moves back and forward to facilitate loading/unloading of cartridges from the magazine. The extractor and firing pin are often integral parts of the bolt.
In gas-operated firearms, the bolt itself is housed within the larger bolt carrier group (BCG), which contains additional parts that receives rearward push from the gas piston.
The slide of a semi-automatic pistol is a form of bolt, as it contains the same parts and serves the same functions.

View More On Wikipedia.org
Recent contents
  1. T

    Colt LE6920 BCG (Bolt Carrier Group)

      1. For Sale
    • $180
    • Woodburn
    • Oregon
    "New unused" Colt LE6920 BCG. Has "C" stamp on carrier. Has "white paint dot" on bolt. $195.00 No trades at this time. Shipping available. Thanks.
  2. huntpotter

    PSA Toolcraft DLC Coated Bolt Carrier Group AR-15

      1. For Sale
    • $80
    • Vancouver Ridgefield
    • Washington
    Up for sale. SW WA, Vancouver area, Clark County area. Black DLC coated AR-15 5.56 Bolt Carrier Group. 9130 MPI shot peened bolt. Toolcraft brand, purchased from PSA for $169 a couple years ago. Used it for 100 rounds to test an upper, detail cleaned, and put in storage. The DLC coating is very...
  3. Lars

    Aero Pro bolt carrier group 5.56

      1. For Sale
    • $120
    • Forest Grove
    • Oregon
    New in box Aero Pro BCG https://www.aeroprecisionusa.com/ar15-556-pro-series-bolt-carrier-group-black-nitride
  4. Duneblaster

    WMD M16 Bolt Carrier Group Complete

      1. For Sale
    • $150
    • Roseburg
    • Oregon
    Unfired, installed once, like new. Shipping is $8.00. x1 left.
  5. W

    Century Arms MKE AP5 bolt carrier group

      1. For Sale
    • $300
    • Portland
    • Oregon
    Very good condition with low round count. Can be used on AP5, ZF-5 and other clones.
  6. s75n

    E2 Armory (AO Precision) AR/M16 BCG Phosphate/Chrome

      1. For Sale
    • $70
    • Portland
    • Oregon
    New never installed $70 Meet near SE 33rd Powell Blvd https://e2armory.com/product/bolt-carrier-assembly-group-ar-m16-chrome-phosphate-test-fire/
  7. Roadpirate2322

    Radian Bolt Carrier group

      1. For Sale
    • $120
    • Albany
    • Oregon
    Approx 750 rounds fired. $120 ftf in albany $130 shipped
  8. ScottInPDX

    Two 5.56/300BO AR15 BCGs

      1. For Sale
      2. For Trade
    • $130
    • Tualatin
    • Oregon
    I have a couple of AR15 BCGs that can go. #1: Aero Precision No-Logo Nitride, has seen less than 20 rounds. MPI marked bolt. $75 #2: I believe this is a Lead & Steel branded BCG, so probably ToolCraft OEM. No logo, phosphate coated, chrome lined gas key and bolt channel. MPI marked bolt...
  9. Tarcos

    Ballistic Advantage 308 Complete Bolt Carrier Group, Black Nitride

      1. For Sale
      2. For Trade
    • $140
    • Milwaukie
    • Oregon
    I never got around to using it so I decided to sell it here's a link to it on their website for specs https://www.ballisticadvantage.com/308-complete-bolt-carrier-group-black-nitride.html?avad=55097_b33a7bc89&avad=55097_a33d43955&avad=55097_e33f98ed9 Brand New $140 Won't Ship Open to Trades...
  10. Tarcos

    Ballistic Advantage 308 Complete Bolt Carrier Group, Black Nitride

      1. For Sale
      2. For Trade
    • $150
    • Milwaukie
    • Oregon
    I never got around to using it so I decided to sell it here's a link to it on their website for specs https://www.ballisticadvantage.com/308-complete-bolt-carrier-group-black-nitride.html?avad=55097_b33a7bc89&avad=55097_a33d43955 Brand New $150 Won't Ship Open to Trades Trade interest...
  11. Duneblaster

    PSA PA10 AR-10 .308 Nitride Bolt Carrier Group

      1. For Sale
    • $150
    • Roseburg
    • Oregon
    PSA PA10 AR-10 .308 Nitride Bolt Carrier Group Unfired. Taken from a PA10 .308 Upper. Has some wear from being in the upper receiver. $150 shipped.
  12. Tarcos

    Ballistic Advantage 308 Complete Bolt Carrier Group, Black Nitride

      1. For Sale
      2. For Trade
    • $150
    • Milwaukie
    • Oregon
    I never got around to using it so I decided to sell it here‘s a link to it on their website for specs https://www.ballisticadvantage.com/308-complete-bolt-carrier-group-black-nitride.html?avad=55097_b33a7bc89 Brand New $150 Won't Ship Open to Trades Trade interest: Firearms, Red Dot? Ammo 9mm...
  13. Duneblaster

    NEW Ballistic Advantage/Aero M5 .308 AR-10 Bolt Carrier Group Phosphate

      1. For Sale
    • $165
    • Roseburg
    • Oregon
    NEW Ballistic Advantage / Aero M5 .308 AR-10 Bolt Carrier Group Phosphate Ballistic Advantage is owned by Aero Precision. If you're looking for an Aero this will work perfectly. New in the package. Details: Carrier Machined from 8620 .308 Bolt Machined from 9310 Forged Gas Key Properly...
  14. Duneblaster

    TruCalibre AR-10 Billet Bolt Catch

      1. For Sale
    • $45
    • North Bend
    • Oregon
    TruCalibre AR-10 Billet Bolt Catch New in the package. $45 shipped.
  15. Tarcos

    Ballistic Advantage 308 Complete Bolt Carrier Group, Black Nitride

      1. For Sale
    • $175
    • Milwaukie
    • Oregon
    Brand New $175 Won't Ship Meet in Milwaukie No Trades I never got around to using it so I decided to sell it i don’t have a photo of it but here’s it on their site https://www.ballisticadvantage.com/308-complete-bolt-carrier-group-black-nitride.html
  16. DIYshooter

    SILENCERCO BOLT CARRIER GROUP

      1. Want to Buy
    • Boise / Meridian
    • Idaho
    I’m looking for a Silencerco BCG to complete my Silencerco rifle build. I’m willing to pay for shipping.
  17. Gunbuggy

    Toolcraft Premium Nickel Boron Bolt Carrier Group w/ carpenter 158 bolt

      1. For Sale
      2. For Trade
    • $60
    • Vancouver
    • Washington
    I found this while tearing through some older rifles and uppers I don't use anymore. I bought this new from PSA and it was in a loaner rifle i dont use anymore. Its probably seen 3 or 4 hundred rounds if i had to guess. I'm not really a nickel boron BCG kinda guy. I get they're smooth and easy...
  18. Duneblaster

    V-Seven AR10 S7 Tool Steel Bolt Catch

      1. For Sale
    • $26
    • Roseburg
    • Oregon
    V-Seven AR10 S7 Tool Steel Bolt Catch. $37 $26 shipped.
  19. Tarcos

    Ballistic Advantage 308 Complete Bolt Carrier Group, Black Nitride

      1. For Sale
    • $180
    • Milwaukie
    • Oregon
    It's Brand New $180 Won't Ship No Trades
  20. Tarcos

    Ballistic Advantage 308 Complete Bolt Carrier Group, Black Nitride

      1. For Sale
    • $200
    • Milwaukie
    • Oregon
    It's Brand New $200 Won't Ship No Trades
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