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AirGunEric · Site Admin

Of the currently available Slavia (CZ) airguns available- i.e. the 630, 631 and 634- which is considered the "best" and why?

I had my hands on one the other day and it was smooth- at least when compared with Crosman, Daisy and lower-end RWS/Diana products.

This spurred me wondering about which of the three current models people consider to be better/best and for what reasons?

broommaster2000 · Moderator

Well, the 630 and 631 are pretty much the same with minor differences, and the 634 is the "top of the line".

The 634 is shorter, but more powerfull, about 220/230 Mps (Around 754 FPS) . Parts are harder to get your hands on for this one. I've read it's a fine rifle, shot one too, but I still want to try one for myself. They're to be used for target practice, and for plinking.

The 630/31 is alright. It does exactly what you want it to do. Put a dioptre on it and you'll be surprised on it's accuracy, especially on a new and mint model. It's hard to fit a Dioptre on one of these though, since they have weird 13 mm rails that are sometimes either 12 or 14 mm.

Quality control of Slavia is fine, but not as great as what they do with their fire-arms. Still, for a rifle that's 40 euro's cheaper then a HW30S it's still a pretty good competition in the right hands.

They're also quite easy to work on.

Slavia · Moderator

I can't comment on the 634, but I have had experience with the 630/631. I own a 631 - hence the name "Slavia." It's my favorite of all the types I own, including powder burners.

There are minor differences between the 630 and 631, but mainly they are the same gun. Parts are interchangeable.

The 630 has more of a "youth" stock, while the 631 has a more "adult" sized stock. The 631 stock is also chunkier in the forearm, to make proper offhand positioning easier.

The 631 has a thumb-operated catch to release the barrel for cocking, while the 631's barrel snaps open like most other guns. Both have automatic safeties, and neither have anti beartrap mechanisms.

Both the 630 and 631 have two trigger springs. One is up inside the action, and the other is mounted on the trigger guard, bearing against the trigger blade. That spring is adjustable on the 631, but not on the 630. The trigger is excellent for the price range. The safety is placed conveniently at the end of the compression tube, right where your thumb can reach it without any trouble.

Construction is precise, and finish is adequate but not superlative. The barrel is not choked. The trigger guard and barrel catch knob are plastic, and are weak points. My trigger guard cracked under the tension of the rear mounting screw, and the knob broke after seven years of repeated use. CZ told me 6-9 months for replacements, so I made my own from aluminum.

I think the manual says 575 FPS; mine is shooting at 603 FPS. With a scope from a rest I can put 90% of my shots in a pencil diameter hole at 10m. So not very powerful, but great for the basement. Good trigger, good price, good accuracy, but low power. If that matches your kind of shooting, this is a great gun.

broommaster2000 · Moderator

There are Gamo springs that might fit for extra powers, or so I've read. I still plan to do this, because the 630 is such a nice experimental platform. Mr. Green

Slavia · Moderator

broommaster2000 · Moderator

It's just a matter of finding the right spring, and if you know the model range of Gamo... Rolling Eyes

I got a better idea, I'll just measure the original 360 spring for ya'll. Then if you're interested, you can mail or look around for a spring that might compare a bit.

Outside Diameter is 25 mm.
Inside Diameter is 18.5 or 19 mm. (The original springguide should make a tight fit, which can be easily achieved by just "bending" it that way. )
The length of the spring is 34 cm (give or take a few mm).
I'm not sure how to count the windings but I think it's about 42.