Manufacturer:- www.air-arms.co.uk (Modifications by the GML team)

Recommended Retail Price :- £??? (Don't know I bought it second hand)
Intended Purpose :- Pre Charged Pneumatic Air Rifle
Power :- Compressed Air
Caliber :- 4.5mm / .177
Length in mm :- 920mm
Barrel Length :- 395mm
Barrel :- Lothar Walther - 12mm o.d. - 4.5mm (.177") & 5.5mm (,22") cals -12 groove rifling - 450mm twist - choked muzzle end
Weight :- 2.48Kg
Safety :- Manual if fitted in trigger (Mine is removed as gun is used for target only)
Trigger :- True 2 Stage 3 sear unit adjustable weight of pull, adjustable length of pull
Action Finish : Matt Black
Air Cylinder Capacity :- ??cc
Charge pressure :- 190Bar (2750PSI) (But sweet spot is around 160Bar on my particular gun)
Shot Capacity :- 80-90 on 190 Bar Fill (About 70 at the sweet spot of 160 Bar)
Stock :- Oiled Walnut
Std Power :- 12ft/lb (Mine is around 11.2-11.4 ft/lb with JSB 8.44 grain pellets)
Includes :- Silencer Adaptor

A few pictures of my shiny new Air Arms S400 GML Hunter.

It's been in storage for a while by the previous owner and not used by them very much as it came to me looking pretty much brand new. It is by all accounts one of the last ones sold by Blackpool Air Rifles.

This is the Hunter version and has a matt black rather than a blued finish to all of the metalwork. It also has the newer air filler design along with the laser etched walnut stock.

As far as I can tell the main differences to the standard Air Arms S400 Classic are :-

1.) Carbine barrel fitted instead of standard Classic barrel
2.) Custom Barrel muzzle flip / silencer adapter
3.) Custom Barrel reinforcing after breach block
4.) Custom Bolt Handle
5.) Bolt action polished for ultra smooth operation
6.) Stainless Steel bolts replacing standard steel items
7.) Trigger adjusted for very light operation
8.) Blacked out matt finish instead of shiny blued steel

It has since has the trigger shimmed on Nylon Washers by myself. This gives a smoother feel to the trigger and a better release of the first stage should you decide to back off on the trigger to have another go. While it was in bit to get at the trigger sears I noticed that the bolt was a little bit too well greased and it was dropping down onto the hammer and slide. So I cleaned it all off and applied a smaller amount of moly grease just to the bolt slide. The hammer should run totally non lubricated for maximum consistency.

Good links for trigger info are here :- http://www.a2kda.com/trigger.htm

Action Strip Here :- http://www.airgunforum.net/agf/index.php?showtopic=16812

I did a chrono test when new and again when I had used it for a bit. They are pretty good with what looks like the optimum fill around 160 Bar.

AA S400 GML Hunter 170Bar Fill JSB 4.52 Chrono Test Results

AA S400 GML Hunter 150Bar Fill JSB 4.53 Chrono Test Results

AA S400 GML Hunter 160Bar Fill JSB 4.52 Chrono Test Results

So far I am amazed how nice it is to shoot. The groups at 30 and 40 yards are very very consistent. I've only been round the Lincs HFT course twice with it so far, but it equalled my personal best with a 58ex60 on the first time out!! With a follow up score of another 58ex60. I'll see how it gets on in the NEFTA rounds later in the week.

So far I am very pleased with my new purchase.

I'll add some more info when I get the chance.

www.air-arms.co.uk

http://airarmsclub.21.forumer.com/index.php

www.airgunbbs.com