Quote Originally Posted by original45 View Post
The 28 mm rws blue seals are fantastic in my opinion. Had many rws blue sealed guns.
None have ever required replacing either despite the condition of rifle or amount used .
Only a guess but using the blue seal could increase swept volume too ?.
Not that it's needed but may allow for a softer spring.

The custom tuning company that shut few years back from India the name alludes me now used to make such a bolt for the m45 rws.

Couldn't be hard and would could suit other models too
Target tune India ?