BCM Bolt Reliability Upgrade Kit

AR/M4 AR Technical Discussion
1

BCM has come out with their own bolt reliability package! Here are the details:

The BCM Extractor Spring is a heavy 5 coil design made for the increased extractor tension required on many AR15, M4, M16 short barreled rifles. This product also improves the reliability on a standard 16" and 14.5" carbines.

As with all BCM branded products, the highest quality is the primary focus. Our BCM Extractor Spring is manufactured by a 9001:2000 facility employing the latest precision equipment. BCM starts with only the highest quality chrome silicon material, heat treats to stress relieve the product and shot peens to add increased strength. This kit also includes the new black extractor insert, standard on all M4, M4A1, Mk18 carbines and the recent new standard on M16A4 rifles. The kit also includes the Crane O-Ring for added reliability.

C4

2

Grant,

Are these available on your site now?

3

Very nice.

4

Yes they are: http://www.gandrtactical.com/cgi-bin/commerce.cgi?search=action&category=BCOM

C4

5

Just great:eek: I just ordered 4 sets of crane upgrade packages.

6

LOL, really the only difference between the ones that I put together and the ones BCM does is the spring. I will be dropping the kits I put together and going strictly to the BCM’s in the near future.

C4