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Surefire SF M-OBC-556 Optimized Bolt Carrier Group 
Listing ID: 1444460
$0.00
[  Seller Info ] Listing Began:May 22, 2025

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Looking to see what I can get for this ultra-rare:

Surefire SF M-OBC-556 Optimized Bolt Carrier Group

This is brand new in the box, I bought 2 of these in 2019 and to my knowledge there werent many produced because I have yet to see it on any website even gunbroker for the past 5years especially BRAND NEW IN THE BOX. I have installed one in my KAC and I have this one thats just been sitting in the safe brand new. Literally have no price to compare it to, but if youre trying to finish building that rare one of a kind gun then this is a must have. Great for a full auto build cause it was what this BCG was designed for.

Double Down on Reliability for AR15’s in 5.56 . Invented by Jim Sullivan, one of the original designers of the M16, the SureFire Optimized Bolt Carrier (OBC) doubles the reliability of any M4/M16/AR variant weapon system during suppressed and suppressed firing. Its patented design allows more time for reliable feeding of ammunition from the magazine and nearly eliminating bolt-over-base malfunctions. The OBC also delays unlocking of the bolt during the firing sequence, which allows expanding gases more time to exit the bore, in turn reducing back-pressure gases exiting the upper receiver group. Additionally, the neutrally balanced counterweight improves carrier and barrel extension lock-up, nearly eliminating bolt bounce. The OBC reduces felt recoil for better target tracking and greater weapon control when firing. Coated with an advanced anti-friction coating, the OBC resists friction during use and makes cleaning easy.

Text first (954) 27I-245I
Looking for high end trades like KAC, LMT or HK.
If the ad is up, its still available.
Price: $0.00
Listing ID: 1444460
  • Seller Type
  • Individual

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