Geissele Automatics M4A1 5.56 Bolt Carrier Group
- For 5.56 NATO / .223 Rem
- High Pressure Tested
- Magnetic Particle Inspected
- Chrome lined bore and gas key
- Properly staked gas key
- Extractor O-Ring and Insert
Geissele Automatics manufactures confidence, offering quality triggers and components for the warfighter and competitor. They were established in 2004 with the mission to build the highest quality, reliable triggers for competition and their first trigger, the Hi-Speed National Match trigger, was so popular that they were asked by the Department of Defense to produce a select-fire trigger for the United States Special Operations. Again, it was a success and Geissele decided to bring a semi-automatic version to the civilian market for law enforcement and personal protection.
Ratings & Reviews
Worked great for my build. Had zero problems so far
by Brad -
Excellent quality and performance. Beautifully crafted.
Start your next build with this
by Michael Rojo
Amazing performance overall BCG is machined incredibly, properly staked gas key and no imperfections spotted & seems to be made to last forever
Great all around BCG
I used this BCG to finish up my Mk12 Mod 1 build; so far its been great with no reported issues. Tolerances & dimensions seem spot on and to be fairly gas efficient. Overall its a great buy, especially when they're on sale.
I bought this for my A.R pistol because of a little problem with the pistol. Cleaned and lubed my gun and it ran great in my pistol. Loving it!