The Saiga-100, in both 30-08 and 308, has some major variations from typical AKs. Most of them seem to take the sporterization of the AK a step further. This does not "neuter" the gun away from a frightening military appearance, but instead develops many of the typical characteristics of a sporting rifle even further. Taking a step "outside of the box" to see where the design of the AK would have gone if it was developed for semi-auto only and designed to compete with long standing sporting arms such as the Remington 7400 and BAR.
Going from front to back, they start with the front site.

While the advertised version of the Saiga 100 has what looks like a flash hider integrated into the front site block, the US version has it completely closed. The front edge of the barrel is recessed and the front site block opens up conically into the resulting muzzle. Almost looks like a shotgun at a glance.

Next we reach the handguard. A radical departure from the usual, this is a two piece handguard that completely encapsulates the gas system.

The two pieces are removed sideways when two screws are removed from the left side.

The handguards are kept from moving by having the forward screw go through this piece pressed onto the barrel.

The front sling swivel is independent of the handguard, and is mounted to the same piece. Fretting over how I would attach a one piece handguard, I found that with enough torque the sling swivel will unscrew.

Now for the biggie. The entire receiver is covered with a plastic shell.


The thickness varies from about 1/16" to 1/4" at various points and covers all the rivets and pins that we would normally find. It also prevents the use of a typical AK safety. Instead, the Saiga-100 uses a button safety that is activated by pushing on the left and deactivated by pushing on the right.


There is a notch in this bar that corresponds to a "nub", a small extension of the trigger. This nub goes through the notch when the safety is off and is blocked when the notch is moved to the side with the safety on.

What's strange is that there's a spring pulling backwards on this lever and fastened inside the front of the buttstock. I have not yet been able to figure out what this spring does at all.
I tried to remove this plastic shell but do not want to remove it irreversibly, so I'll wait to do that until I figure out how for sure.
The receiver cover also has a plastic shell, but in this case it seems that either a complete receiver cover had plastic moulded over it or the metal contact points were moulded in.

The recoil spring was the type typically found on the Saiga shotguns, due to the longer action requiring an additional plate to help in protecting the inerts from dust.
It seems as though the purpose of this plastic shell for the receiver and top cover was to provide for smooth aestehetic transitions with the furniture.


The scope rail is mounted much higher than other AKs. I'm not entirely sure why this is, probably to accomodate the shell. If one were making a one-piece full length stock, this would be a much better position for the scope rail.
This receiver shell includes a trigger guard. This trigger is extended, like the Saiga-308, but not nearly as far as the Saiga-308. In my opinion it feels much less awkward.
This different grip and trigger angle is accomplished by a combination of different modifications to the standard AK design, which you have probably noticed already. First, there is no rear tang on the rear trunion. Two screws retain the buttstock. One is on the bottom, the other is at an angle down the grip from the front side of the rear trunion.

Second, the receiver is angle cut. These two changes allow the shooter's trigger finger to reach farther forward under the receiver and closer to the trigger's axis. Incedentally, I have a design in the works with the same changes intended for a regular caliber AK. My version uses a shortened receiver as well, and is intended to make it possible to use a regular AK trigger with a classic sporter stock. This is intended primarily for California AK builders, but I'm sure there would be some interest in that style outside of the PRK.
The buttstock istelf seems a little bit shorter than what we're used to. Maybe what we're used to is a little long. I surprisingly didn't find it that much shorter than my QPG stocks, which I've always assumed were on the long side. It certainly didn't feel uncomfortably short. Unlike the other synthetic stocked Saigas, the S-100 has a rubber buttpad. It isn't very thick, so I wouldn't count on a great deal of recoil absorption, but recoil of a 30-06 in a rifle this size should be nothing bad. It seems to be mainly intended to resist slipping.
Edited by BattleRifleG3, 11 February 2007 - 08:53 PM.
These are the times that try men's souls. The summer soldier and the sunshine patriot will, in this crisis, shrink from the service of their country. But he that stands it now deserves the love and thanks of men and women. Tyranny, like hell, is not easily conquered; yet we have this consolation with us, that the harder the conflict, the more glorious the triumph. - Thomas Paine, 1776
From this place we will deliver notice to the parlaiments of conquerors that a line has been drawn against the darkness.
And we will hold that line, no matter the cost. - John Sheridan, 2259
They Invade our space, and we fall back. They assimilate entire worlds, and we fall back. The line must be drawn here, now! This time they will go no further! And I will make them pay for what they've done. - Jean Luc Picard, 2376