Toolcraft left handed Bolt Carrier Groups ship FREE.

Your Left-Handed AR15 Build deserves the best quality BCG you can get - Toolcraft!

This quality Toolcraft bolt carrier group has all the outstanding specs of the right-handed Toolcraft BCG, but it's a lefty. Both the carrier and the bolt are the exact mirror image of a traditional right-handed BCG. Use this left-handed BCG in a left-handed build, or as a spare BCG for your complete left-handed rifle.

The extremely hard Black Nitride finish results in less friction and smoother, more reliable function. Easy clean-up is a nice bonus. The rich black color on these BCGs looks great on the Black Rifle!

This is a .223/5.56/300 Blackout bolt carrier group.

Will not work with 6.5/6.8/308 etc.


Bolt Left-Handed; Shot Peened; MPI
Bolt Material 9310
Bolt Finish Black Nitride
Caliber .223 | 5.56 NATO | 300 Blackout
Extractor O-ring Viton; Mil Spec
Carrier Material 8620 Steel, Toolcraft Proprietary
Carrier Finish Black Nitride
Carrier Design Left-Handed; Full Auto Style
Gas Key Material 4130 Steel
Cam Pin Material 4140 Steel
Cam Pin Finish Black Nitride
Firing Pin Material 8740 Steel; Hard Chrome Plated
Manufacturer Toolcraft