I need advice for FWB 124

 

Original seals? Which is the usual culprit, they go bad and deteriorate and performs as you describe. You will need to purchase a new piston seal. Pyramyd Air should have seals or what most the guys do is order from Air Gun Headquarters, new seals or complete kit. Personally if I'm to go inside these guns I usually drop in a kit. They respond well with a kit and tune. A tune can be nothing more than kit install, lube tune, and a deburring. Easy and fun gun to work on and of coarse there is a couple tricks to know that will simplify and safer to dismantle. What I described here is a simple home tune. These are great guns and if you want a professionally tune rifle my number one person to send it to would be David Slade. If you do decide to send it out to Dave by all means ask for his trigger tune! Dave is known as the TriggerMan and knows these triggers.

If you need some encouragement or help I would gladly help in assisting you but rather talk in person or by phone as I can say more in two minutes than I can type in two hours with these old not so nimble fingers! 

Cheers, Mike

https://www.airgunwerks.com/

Perhaps this will add some encouragement,

Google: Frank B's FWB 124 Tear Down and Rebuild Part 1

Frank B's FWB 124 Tear Down and Rebuild Part 2 Final

John's suggestion, post below, "Scott Blair" would also be a great choice and he does some BEAUTIFUL work!
 
Plus one on both David Slade and Scott Blair. David hasn't done an FWB for me, but I have a couple of other guns he tuned - he is very well respected, and he really is good with the trigger work, and the FWB's trigger could use as much help as it can get (at least compared with an HW rekord trigger).

Scott did my last 124 (based on the advice of Kingfisher) and I was very impressed. He prefers the Maccari "slightly softer" kit, which will drop your velocity to the low-mid 700's initially, recovering to more like 750 or so once it breaks in. I was skeptical (why would I want LESS velocity and power??), but ended up giving it a try and I have to say, the gun is one sweet, smooth shooter - one of my favorites!

Or, if the gun is in perfect cosmetic condition, I'd say forget the whole thing and just sell it to me! I only have two right now, so I obviously need another one (right John?)
 
...they're pretty easy. you will need a spring compressor , tho.... i learned how to work on my own over the phone with ray in alaska (super6)...dunno what he goes by now - or if he is even able to be on the forums... i learned how on a diana 350.... i can teach you if you like - i resealed 3 of them since june.....and everyone is right...the piston seals go to crumbs - usually an off white or creme color.....o...... i forgot , there's gonna be lots of crud lodged in the end where the piston seal slams the air out of that little hole behind the pellet (transfer port)... parts are more expensive for that gun , but i hear the air rifle headquaters guy LOVES those rifles.....and you can tell when you goto his site....piston seal $30... mainspring about that , and you'll need a breech seal.... macarri has been the best source for me on those fwb 124 / 127 sporters. anyway , if you have lotsa airguns and are somewhat mechanically inclined.....you might consider learning.... thanks to ray moody (...i hope he's still with us..) - he taught me for free and i'll do the same for you.... a fair price to pay someone for installing macarri parts would be $120-150 including good return shipping... and those guns are so awesome that most anyone else you get to do it, will wanna really do a good job (shoot it a bit, too) ..... those sun optics spring compressors work for that gun , but not longer magnums - same design as the old b-square spring compressors.... hope that helps ..... i can only share my own personal hands-on , real-time expereince.... if i had no budget , tho .... man .... david slade , or actually - steve pope across the pond (brittian)....... - cheers.
 
Shareef.....2 is not even a proper start. My friend Bill just got number 24!!! I just picked up 3 more myself. I'm making 2 of them customs. Mr. Blair has his work cut out for him.

One is an old ARH stock for the F124-CX. Here's a puc from
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post on here that shows what I'm talking about. The other is a PW stock he is making me based on the old Beeman Fancy stocks. It's the blank on the left.
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​​​​The 3rd I picked up is a minty 124D. Crap ....I forgot about the one I told you about! Guess it's 4 more!!!!! Lol
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..i repaired this one last month for an older fella that just had eye surgery.....i suppose it didnt work well , and he asked me to come get his and sell it....i tried to get him to take and shoot the .25 co2 rig i had with me - thought it'd be easier to see and load and such....he just said no any type of shooting with anything... (.... man .... ) i explained he lives on land where we used to hunt , fish, and trap with our benjamins in 8th grade - 1984 was good ... it has ALL the bells and whistles. he paid about $750 for everything in 1984.... i was asking him , " did some of these have 124D engraved into the tube , while others just say 124 ?" then he pointed out the select stock on receipt....there must be all sorts of stocks for these (but the functioning and performance is about where it stops for me - too much bling).... he explained something about extra scope alignment or something and that the supertune incorporated some nickle plated parts...maybe the spring guide....idk... all i really noticed was the spring he had in it was better than the one i was gonna refurb it with and that it shot around 830 fps with those napier domes (or bsa domed) where others seemed to get around 790 with the new piston seals and springs (parts not run in yet).... i guess seeing an actual r5 would be the true holy of holies grails....
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There is good reason for the FWB124's ( & family) reputation.

Should someone have one and care about those oem/"special" tune parts give David Slade at airgunwerks a call. If using David he may have been the one who set it up original at Beeman. He refuses to use some aftermarket kits as he has to warranty labor and parts, his bluing/blacking is outstanding. 

Not a lot of rifles that I personally would send extra on for something like bluing but maybe a decent 124.



For the DIY type click around:
http://anotherairgunblog.blogspot.com/search/label/FWB%20124



Looking forward to an update on this rigs rebbuild



John