IWI has bolt barrel kits.. They do not recommend changing just the bolt ,, Inless you send to them and they can head space it
The whole headspace thing is a bunch of mularky...I've tested and measured several bolts and they came out the same.
I have the armorer's manual for the Tavor...when doing a conversion...it does NOT call for a headspace check during the process...
Reality is....if the Tavor had such a finnicky headspace "issue"...each assembler would have to hand-pick bolt during assembly...which is not happening...any good manufacturer will check head space of a rifle before heading out...but from my experience and measurements...each bolt has been manufactured exactly the same...
For a good two years...IWI allowed us to do the conversion...then they took it away...but I never ever never heard of anyone reporting any failure of a RH-LH-RH conversion gone bad...
9.2 Conversion Process
The following paragraphs provide step-by-step conversion instructions:
a. Change cocking handle from left side to right side as follows:
1) Remove cocking handle assembly from the receiver.
2) Remove pin securing cocking handle to cocking handle cup.
3) Remove cocking bar subassembly from the left side slot of the cocking guide and change
it to the right side.
4) Connect the cocking handle to cocking cup and insert the securing pin.
b. Assemble the cocking handle assembly and change front swivel from left side to right side as
follows:
1) Insert front swivel bur to the rifle on the left side.
2) Screw the securing nut on the right side.
3) Insert the ejector pin.
c. Change safety lever from left side to right side as follows:
1) Remove safety lever from left side.
2) Remove safety pivot cover from right side.
3) Assemble safety lever on the right side.
4) Assemble safety pivot cover on the left side.
d. Change ejection port cover from left side to right side and the deflector from the right side to
the left side as follows:
1) Remove ejection port cover by sliding it out to the butt direction.
2) Remove ejection port shield.
3) Unscrew the deflector screw.
4) Remove the deflector from the right side.
5) Assemble ejection port shield on the right ejection port.
6) Assemble ejection port cover on the right ejection port by sliding into the ejection port
shield.
7) Assmble the deflector on the left dise and tighten the deflector screw.
e. Change the bolt carrier as follows:
1) Remove pin from right side of the bolt and assemble it on the left side.
2) Remove bolt carrier back pin from right side of the bolt and assemble it on the left side.
f. Replace right handed bolt (part no. 00.704.3101R) by left handed bolt (part no.
00.704.3101L).
Now the manual does show how to do a headspace check in the next section...but it is not specified anywhere in the manual when you should perform a headspace check...
Than their reason for bad head space does not list out of spec bolt...rather...worn bolt or worn barrel...or soot/splinters in the chamber area:
1 Cartridge head space large:
Worn barrel Replace barrel
Worn bolt Replace bolt
2. Cartridge head space small:
Soot in chamber Clean with brass brush
Faulty bolt, splinters Remove splinters from locking
stages
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