Compensating Spring Set Problrm

[Arnhem44mad]

Hi everyone. As many of you are aware I created a replica gas Trap build. The only problem is I cannot cock the weapon as the springs are so tight. I also have a Schuster Gas Trap Repro Cylinder.

I have an original 0 SA Operating Rod and was wondering if anyone had any suggestions as to making the cocking and dry firing possible?

Could I cut the longer Spring down?

Many thanks!

Scott

[Bubba1]

Yes, you can cut down the longer spring and even trim.the comp springalso, if needed. The springs you have are ones made by T. Giacobbe and were made for display only, not shooting. It is difficult to make those springs operate properly for shooting but will work fine for what you're wanting to do.

[Arnhem44mad]

Yes, you can cut down the longer spring and even trim.the comp springalso, if needed. The springs you have are ones made by T. Giacobbe and were made for display only, not shooting. It is difficult to make those springs operate properly for shooting but will work fine for what you're wanting to do.

Perfect mate, thank you very much! I was considering getting some 3D printed for future replica projects, do you think this would work?

Many thanks!

Scott

[RCS]

Joe Sturdy made the first repro keystone spring in Utah, also made the com spring. Later Giacobbe had springs made too. Very, very difficult to open the action and you could never expect them to work the mechanism with live cartridges. Collectors tried to anneal them or cut them shorter which never worked. These were just for display

Much later really nice repro springs were available but the keystone copy was shorter but worked

In the mid 90's I bought a Dec 1940 rifle with a SA 12-40 bbl that was imported and it had an keystone full length spring on a round body follower rod. Some collectors broke original keystone springs in the attempt to remove them from the round body follower rod. Even these 16 1/2 and 17 inch long broken keystone springs use to sell for $1500 to $1800.

[jak]

Why is a reproduction keystone spring so difficult to make ? What are the properties of an original keystone spring that cannot be duplicated ?

[RCS]

Been attempts to duplicate the keystone spring for the past thirty years. originals are now anywhere between 3k to 4K, i would guess ?

photos show original springs

[Arnhem44mad]

Yes, you can cut down the longer spring and even trim.the comp springalso, if needed. The springs you have are ones made by T. Giacobbe and were made for display only, not shooting. It is difficult to make those springs operate properly for shooting but will work fine for what you're wanting to do.

Hi mate, I cut the Spring down so now it is possible to cycle the op Rod cleanly, however the op Rod tends to slip out of the Gas Cylinder.

The Gas Cylinder is a schuster repro and the fro handguard is a repro with Ferrule with lip.

Ia there a way to prevent the op Rod from slipping out of the cylidner? Soes the barrel have to be cut down slightly?

Thanks!

Scott

[Arnhem44mad]

Any ideas?

Scott