All tubes Gr9 TI. Threads are 24tpi. The ID is bored concentric to OD. Adapter / end cap Gr5 TI. Internals are SS and TI sized and spaced for correct fit. Griffin TM / YHM / direct thread adapter, RCE / RRCE end cap.
With the variations in length of Griffin and YHM mounts it is important that you let us know exactly what you intend to use. This will ensure that your kit is set up properly.
For more information and customized kits send email to firstname.lastname@example.org