CRANE Upgrade Kit & MP Tested Bolts

One of the weakest links in the AR system is the extractor. Not enough tension and the weapon will not run properly. Crane came up with a rebuild kit for worn out springs and inserts along with an O-ring to help with extraction.

I have also installed this upgrade kit to the CMT MP tested bolts we sell.

Please e-mail us with any questions. sales@grtactical.com

C4

Crane O-Ring Upgrad Kit is available here: http://www.gandrtactical.com/cleaning.htm

CMT MP Tested Bolt w/Crane Upgrade Kit installed is available here: http://www.gandrtactical.com/cmt.htm#pMPI

Grant, I’m going to be calling Monday to order two of them.

Me too… but need to add some stuff to make shipping more beneficial…

Rmpl

Roger guys, just give me a call.

C4

Forgive my ignorance, but what is the little black jobby on the end?

That is a Crane O-Ring that enhances extraction.

C4

In the first picture?

“CRANE O-Ring, 5 Coil spring, and Black Insert”

Follow link above picture.

I’m slow, I understand what it’s for now.