Carter halfblock, hammer issue

[drg]

Worked on a Carter halfblock sniper today that had a problem with the bolt not clearing the breech completely on backstroke. User ended up having lots of chopping problems as a result.

Traced the problem to the hammer -- the slot milled in the top of the hammer was too short, so the hammer lug was hitting the back of the lug slot before the bolt fully cleared the breech.

I happened to have another halfblock hammer from my gun and we swapped it in. The bolt clears properly now.

If you are one of the lucky few Carter halfblock owners, you may want to check this on your marker.

An interesting thing about the Carter hammers is that the slot is shallower than the typical halfblock hammer, which preserves more hammer weight (it was noticeably heavier).

[antsman68]

i have a 2003 which i had halfed, used jcurts bolt and sled etc, and dimensions for hammer slot, and i got eactly the same problem with the bolt not clearing the feedtube fully, unless i cranked the lpr up till it leaked , only way i could figure to get it goin was to extend the slot, which cured the problem,

real glad to hear im not the only one that struck this, although i dont have carter hammer, mine is just stock,

ants
New Zealand