Back to my barrel, yes, it is an original barrel and since my original question here I've come across two other people with exactly the same problem, so now there's at least three of us using PTFE tape to solve it
HFT 500 air blast
Re: HFT 500 air blast
Sorry Peter, I didn't spot your post. The trigger post on my gun is 3.65 mm. You might like to check with someone like Julian Bond, but I'm pretty sure the button would be fine for an MPR. I wasn't sure about the button at first, but now I like it, although I'm not sure it does anything to help my accuracy.
Back to my barrel, yes, it is an original barrel and since my original question here I've come across two other people with exactly the same problem, so now there's at least three of us using PTFE tape to solve it
Back to my barrel, yes, it is an original barrel and since my original question here I've come across two other people with exactly the same problem, so now there's at least three of us using PTFE tape to solve it
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TenMetrePeter
- Posts: 1043
- Joined: Wed Jun 29, 2016 5:40 pm
- Location: Luton Beds UK
Re: HFT 500 air blast
Thank you. The MPR post is 4mm but 3.65 could be drilled out. In the end I made one from some 9mm dia brass from Ebay and "turned" on my pillar drill with files and "parted off" with a hacksaw on a block. Drilled 4mm and grub screwed m3. Needs a shortened allen key.
https://drive.google.com/file/d/0B5fXYa ... sp=sharing
With a 10m rifle with no specified let-off weight the trigger is adjusted light with virtually no second stage (or even no second stage al all) and many top end rifles have buttons or flat blades. 10m pistol has minimum 500g let-off and normal curved blades are more normal.
https://drive.google.com/file/d/0B5fXYa ... sp=sharing
With a 10m rifle with no specified let-off weight the trigger is adjusted light with virtually no second stage (or even no second stage al all) and many top end rifles have buttons or flat blades. 10m pistol has minimum 500g let-off and normal curved blades are more normal.
Re: HFT 500 air blast
As I said, I am new to AA guns and I have just seen an S400 barrel for the first time (as opposed to just looking at the diagrams). It has 2 o-rings, one each side of the transfer port 
. The solid steel HFT500 barrel does not have any o-rings, or any other seal. Why the hell would Air Arms think that comparatively soft, conformable brass need o-rings, but hard steel doesn't'? I will contact them and see what they have to say, because on the face of it it's ridiculous. Obviously, I could get someone to machine 0-ring grooves in the barrel, but meanwhile the plumber's tape continues to do it's job....
. The solid steel HFT500 barrel does not have any o-rings, or any other seal. Why the hell would Air Arms think that comparatively soft, conformable brass need o-rings, but hard steel doesn't'? I will contact them and see what they have to say, because on the face of it it's ridiculous. Obviously, I could get someone to machine 0-ring grooves in the barrel, but meanwhile the plumber's tape continues to do it's job....Re: HFT 500 air blast
Archer50 wrote:As I said, I am new to AA guns and I have just seen an S400 barrel for the first time (as opposed to just looking at the diagrams). It has 2 o-rings, one each side of the transfer port
My buggers don't have them and its not in the parts breakdown diagrams either. I reckon someone has fitted the O-rings themselves. Sounds like a good idea!
Mark
S410C .177 Regged - MTC Viper 4-16 x 50
S410K .177 Regged - Hawke Nite-Eye 4-16 x 50 AO IR
S410K .22 - Hawke Sport HD 3-9 x 50 AO IR
Logun Mk1 .22 - AGS 3-9 x 40
Theoben Taunus .22 - Simmons 4-12 x 40 AO
BW1911R2
Walther CP99
Webley Premier .22
S410K .177 Regged - Hawke Nite-Eye 4-16 x 50 AO IR
S410K .22 - Hawke Sport HD 3-9 x 50 AO IR
Logun Mk1 .22 - AGS 3-9 x 40
Theoben Taunus .22 - Simmons 4-12 x 40 AO
BW1911R2
Walther CP99
Webley Premier .22
Re: HFT 500 air blast
Mark112 wrote: I reckon someone has fitted the O-rings themselves. Sounds like a good idea!
It's a brand new barrel, straight from the factory!
Anyway I will contact AA and post any outcomes here.
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