PDI rubbers have two ribs for improved air seal. The design has two nubs with a channel in between, which helps center the BB in the barrel for more consistent hop application.
From PDI:
Compact, but it has high power
This is new model packing of PDI.
It has two ring ribs on the outer surface, and they improve airtight.
And more, it has "W hold ledges".
Two ledges in the packing are steady of the BB's trajectory.
It made of nitrile rubber(Hs50), and has high oil resistant and abrasion resistance.
You can use it all season!
Details
Material: nitrile rubber
Usable barrel: Tokyo Marui AEG Inner barrel , For PDI Hop up chamber inner barrel
About this product:
*PDI make it to improve the airtight so please adjust the centering each parts.
*Not for AEP and compact machine gun.
*If you cut packing by 6mm from the muzzle, it is possible to use it for TM M14. .
*If you cut packing by 2mm from the muzzle, it is possible to use it for TM new generation gun.
*If you use PDI hopup chamber, it is possible to use it for MZ type96, APS-2, CA M24.