Home > Bolt Carrier Groups (BCGs) > 223 / 5.56 / 300 BLK
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Complete M16 Bolt Carrier Group - Black Nitride Complete M16 Bolt Carrier Group - Black Nitride
Deal of the day $129.99
SALE PRICE: $75.00
IN STOCK
(30)
Titanium AR-15 Firing Pin Titanium AR-15 Firing Pin
MSRP $27.99
SALE PRICE: $17.95
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Mil-Spec Phosphate Carrier w/ Gas Key RTB Mil-Spec Phosphate Carrier w/ Gas Key
MSRP $59.99
SALE PRICE: $45.00
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(6)
RightToBear.com AR-15 Black Nitride Lightweight Carrier RTB AR15 Lightweight Carrier - Black Nitride (carrier only)
MSRP $179.99
SALE PRICE: $65.00
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Phosphate Bolt Carrier Group 158 - MPI Phosphate Bolt Carrier Group 158 - MPI
MSRP $139.99
SALE PRICE: $75.00
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(14)
RightToBear.com AR-15 Black Nitride Lightweight BCG RTB Complete Lightweight Bolt Carrier Group - Black Nitride
MSRP $179.99
SALE PRICE: $105.00
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Spikes tactical lightweight BCG Spike's Tactical Lightweight Nickel Boron BCG
MSRP $250.00
SALE PRICE: $209.99
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(28)
Battle Arms M16 Bolt Carrier Group BCG Battle Arms M16 Bolt Carrier Group BCG
MSRP $145.00
SALE PRICE: $135.00
FREE SHIPPING
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Faxon Firearms Complete Nitrided Bolt Carrier Group FAXON BOLT CARRIER GROUP - COMPLETE - NITRIDE
MSRP $145.00
SALE PRICE: $137.75
FREE SHIPPING + 7% OFF SALE PRICE WHEN ADDED TO CART
IN STOCK
WMD Guns Nickel Boron NIB-X Bolt Carrier Group   Full Auto WMD Guns Nickel Boron NIB-X Bolt Carrier Group M16 Full Auto - Polished
MSRP $170.00
SALE PRICE: $153.00
(Out of Stock)
(36)
Spikes Tactical AR15 Complete Bolt Carrier Group - 5.56MM BCG Spikes Tactical Bolt Carrier Group HPT/MPI (5.56)
MSRP $149.95
SALE PRICE: $129.99
(Out of Stock)
(26)
Rock River Arms chrome bolt carrier group Rock River Arms Complete Bolt Carrier Group (CHROME)
MSRP $175.00
SALE PRICE: $145.00
(Out of Stock)
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Rock River Arms Bolt Carrier Group Rock River Arms Complete Bolt Carrier Group
MSRP $149.99
SALE PRICE: $115.00
(Out of Stock)
(2)
Fail Zero M16/Full Auto EXO Bolt Carrier Group - No Hammer Fail Zero M16/Full Auto Nickel Boron EXO Bolt Carrier Group - BCG
MSRP $160.00
SALE PRICE: $119.99
(Out of Stock)
(87)
Mil-Spec Bolt Carrier Group - 158®  MPI  (5.56) RTB Mil-Spec Bolt Carrier Group - 158® MPI (5.56)
MSRP $139.99
SALE PRICE: $99.99
(Out of Stock)
(4)
M16/AR15 Bolt - 9310 MPI (5.56) - Completion Kit - *Nickel Boron* M16/AR15 Bolt - 9310 MPI (5.56) - Completion Kit - (Nickel Boron) - Blem
Our Price: $67.95
Deal of the day $39.99
(Out of Stock)
(22)
Nickel Boron Bolt Carrier Group - 9310 - MPI -  M16 BCG (5.56 RTB Nickel Boron Bolt Carrier Group - 9310 - MPI - M16 BCG (5.56)
MSRP $169.99
INTRO PRICE $134.99
(Out of Stock)
(21)
Faxon Complete Nitrided Lightweight Bolt Carrier Group FAXON GUNNER LIGHT WEIGHT BOLT CARRIER GROUP - COMPLETE - NITRIDE
MSRP $249.00
SALE PRICE: $236.55
FREE SHIPPING + 7% OFF SALE PRICE WHEN ADDED TO CART
(Out of Stock)
Ballistic Advantage 5.56 Phosphate-Coated Bolt Carrier Group Ballistic Advantage 5.56 Bolt Carrier Group - Phosphate
MSRP $125.00
SALE PRICE: $119.99
(Out of Stock)
(2)
   
 

5.56/.223 300 Blackout Bolt Carrier Group

Gas-operated firearms, including various assault rifles, require a bolt carrier group (BCG) to complete the cycle when a round is fired. A complete BCG pulls a round from the magazine and loads it into the chamber before locking back into place. A popular type is the 5.56 bolt carrier group, which also works as a 5.56 .223 bolt carrier group. However, some rifle owners do not understand that many 5.56/.223 BCGs can be used as a 300 BLK BCG.

All of the bolt carrier groups from Right to Bear Arms and Supply include special features that provide the best bang for your buck. Many of them use a Carpenter 158 bolt, but some have a 9310 bolt. Models from Spike's Tactical and others are high pressure tested – HPT – and magnetic particle inspected – MPI. In addition, the Fail Zero BCG uses a full auto carrier.