A.I - SRS Spring Guide Base Spacers

A solution for a problem you didn't realise you had... 

But now you will notice it every time you rack the bolt 

It's difficult to explain in words but check out the video for a better demonstration.

After the sear locks at the back of the bolt pull, there is an amount of slack, which depending on your setup, means an additional click and and dead zone during the pull. These inserts can be placed behind the spring guide to remove this slack and give a slightly nicer bolt experience. 

Multiple inserts included so that you can calibrate the exact length required for your setup in 0.2mm increments. 

Note: Inserts will not effect pull length, but will slightly increase the spring preload which will potentially cause a small increase to the joule output.