View Full Version : AIII - extractor or not?
7th April 2011, 13:16
Do the AIII actions use an extractor? If not, can someone overview the mechanics of operation...and compare to the L61 and AIV and AV? thnx
7th April 2011, 15:46
setch.... They all use an extractor of the same type. The actions are all based on The L61R with minor differences.... Regards, Nick
7th April 2011, 16:35
The AIII, AIV, & AV are all L61R actions. The stamping changes denoted some minor modifications such as change to the bolt shroud, length of rear tang, a Safari model (AIV), & possibly others I am ignorant of. There was a new trigger mechanism in 1990 (L61R M90) but I don't know if there was a stamping change for that mod. All rifles must have an extractor of some type, but I don't know if Sako did any mods to it during the L61R's lifespan. They also dropped the 3rd (rear) locking lug on the bolt, but I don't remember the year & I don't think there was a stamp change for that.
7th April 2011, 18:26
To my knowledge, the extractors on all Sako actions from the first L57's through the Model 75 series were identical (other than size). Some early L461's had a longer and narrower extractor that carried over from the L46, but it was of the same functional system as the other Sako extractors
A few months ago I bought an L579 which turned out to have the tip of the extractor broken off. I ordered one of the "Sako type" extractors made for retrofitting the Rem 700 action from Brownell's and it fit perfectly.
7th April 2011, 18:52
This is a helpful thread...so thanks to all for the details. My frame of reference is a M70 full length extractor. When we say the L61 (and all subsequent actions) use an extractor of varying length...is it the full length type a la M70 or are you referring to the locking lugs that aid the extraction of the shell?
7th April 2011, 20:42
The locking lugs do not aid or have anything to do with extraction. The lugs hold or "lock" the bolt in place behind the cartridge when the round is fired. If a bolt has a full length extractor it's length would vary depending on the length of the bolt/action. I think that is what you are referring to about extractor size. The width & radius can also vary depending on case head diameter. All things can vary between makers, models, & designs.
8th April 2011, 04:16
Here may be the confusion on "full length extractor": The Sako has a bolt guide, which has nothing to do with its extractor, that outwardly looks exactly like the "full length extractors" of M70's and Mauser 98's, etc. This bolt guide does not rotate with the bolt and terminates at the rear surface of the right-hand (lower) locking lug without reaching over that lug like the Mauser-type extractor does.
Rather, the Sako extractor is a small hook machined into the side of the bolt and rim of the bolt face which pops over the cartridge rim as the cartridge fully seats in the chamber.
All Sako extractors are very short; only that those on the early L46/L461's were a tad longer an skinnier than those on later L461's and 57-579-61R actions.
As far as aiding in extraction, there is a camming surface at the rear bridge of a Sako which engages a similar surface on the bolt handle root which provides initial extraction leverage as the bolt is raised.
Sako extractors are extremely dependable. I've never seen one tear through a cartridge rim and I've only seen one broken extractor in 45 years of messing with Sakos (it was on a used gun that I bought unaware so there is no record of what might have happened to it. It took only two minutes to replace it with an aftermarket piece purchased for $24.) There is a cottage industry of suppliers and gunsmiths who convert Remington 700 bolts to use the more dependable Sako extractor.
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