Tune Kits




Allow 7 days for kit building besides freight time.

   If you do not see it listed, it is not available or out of stock.

 We reserve the right to modify or improve all products on these pages without prior notice or consent.

 If it does not say the seal is included, it is not. Only one or two kits have seals and they are boldly stated.

Hatsan, Gamo Owners, Crosman, Bam, Chinese, Spanish etc. We may have a few springs that may work in these guns listed as well as seals ( E3650-R9 Tarantula-E9870). Read our spring specifications to see for yourself what may work. That information is under each spring listing below.

 Please do not email us for other parts or info on the latest Gamo,Crosman,Benjamin, Bam, ETC. to come on the market. ( Sorry we can no longer respond to these emails)  We would have to buy every Gamo etc. to see If it took the same parts as the rest. Guessing is not an option and buying 2 guns a week to look at and then toss aside is not something we want to do anymore. Consult Gamo-Airgun forums for those doing that type of foreign gun work.

Every kit explains what is included in its description.

We only source "Made In America" raw materials for our tuning products and machined items. All spring wire used is certified "mercury free".

All Kits are made to wear in with use and require a break in period.

**Our Kits simply drop in and require no gun alterations. That is very important when selecting a tune kit manufacturer.


Copyright © 1997-2015 ARH. LLC.

Click on the blue product links for product descriptions.

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New HW95-77-97 GSX OS UK Kit -Adjustable Power


Hornet Mk6 -Hw77-97 FAC Kit


Hornet MK6-R9,10,11-HW95-85 FAC. Kit


MK6 Hornet Spring Hw95, R9,10,11, 77,97,85, etc


New SG2 R6-HW99-HW50's- HW57 Kit- Upgraded


New "ULTRA XLD" Hw99-R6-50 Spring


Updated NEW-Hw50s, R6, HW99, HW57 Indoor Plinkers Kit


New HW55 Custom Kit- UPDATED


Updated- Beeman R8- Old HW50 Kit


HW-Beeman Cocking Lever Insert


New- Hw35 Ultra Pro Tune Kit


HW35 Custom Spring


New R7-HW30 Mainsprings


New-Hw30-R7 Deluxe Tune Kit


Bsf 54, 55,60,70,80 Power Spring


Webley Xocet, Stingray,C1, Vulcan Tune Kit


Longbow Tune Kit


NEW-JM's "Old School Buttons"

Orig.: $7.00
Sale: $6.00

NEW GRT. MK2 RWS-Diana Kit 31,34,36,38,40,45,46, 300,


GRT RWS 31,34,36,38,40,45,46, 300 Spring


NEW- GSX-OS RWS-Diana 34,36,38,40,45,46, 300 kit!!!!!!!!


NEW- ZRT Mag RWS-Diana 48,52,54,56,460 Mag Kit


New Ruger- RWS-Diana 350 Mag- Elite XL


.750" OD Piston Spacer Washer-.150


.790" Piston Spacer Washer- .150"


.875" OD Piston Spacer Washer


New-Piston Weight- Slug


Spring Guide Power Spacers


NEW-Walther LG55-53 Custom Mainsprings


NEW! Euro Tarantula 32 coil R9-85-95-Chinese-Gamo-BSA ETC


E3650 Ultra Spring


NEW-Gamo Etc. Express Package Deal- Seals, Lubes, Spring


UK Universal Spring- Bam-Chinese-Cometa 400-94-Spanish- Win 1000-


E8700 Universal Mini Spring


Ultra Mag Universal Spring

Orig.: $35.00
Sale: $25.00

Merlin XL- Custom Spring- Upgraded Use Info


FWB 65-80-90 Pistol Custom Spring


RWS 6, 10, Win 363, HS 816, 800, etc -3 pc Spring set


Diana- Original-Beeman Rifle 75,65,66, 60 and other variants


Monolith Relacement Springs - To Close Out


Gunsmith Tuning Spring Assortment- 15 springs


New-Webley UK Built Tomahawk Basic Kit With Seal


FWB 150-300 Custom Spring


TX200 MK3 - Maccari MK3-5-Pro Sport Kit-FAC


QX 4600 Mainspring- TX-PS


TX200- ProSport- SR Hardened Rear Guide Washer


New TX200-HC .128 Spring-FAC


TX200-HC-PS Full Power Kit-Heavier Wire Kit


RWS-Diana-Beeman-Winchester-Original 5 Series Mainspring


NEW- E3200 Custom Spring- For Old HW50-55 Kits We Made


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 Our target audience is skilled gunsmiths and airgunsmiths. So we supply no instructions or advice on assembly, dis-assembly or exploded diagrams or "how to" books or files. Thank You!


*It has come to our attention that a certain vendor is claiming to be selling Apex seals of ours in India. (Tirthasankar Mandal) On forums mostly. What he offers is not our product in any way shape or form. Beware!

We have no distributor there and sell little to no volume to India of any parts. The Apex name is our trade name for our seals we make here in the USA.


We are not affiliated with Target Tune India. They are using our product names without permission.



Spring gunning 101.

Only care about velocity? Run a spring on one sloppy guide spaced to the max and no lube.You will get velocity and the gun will shoot like a bucket of bolts. Put two tight guides on it and a correct tight fitting seal, with some lube and it will shoot like a dream if the receiver or comp tube is true. Should be common sense. Chrono a gun after a fresh repair or tune. Why bother? It's not going to tell you much. We as well as others strived in the mid 90's to present these facts to the Internet world but since the "old timers" no longer do forums, it's all been lost.



Unsolicited Testimonials;


Dear ARH,

Contacted you Monday for a special kit for my older HW77 in .22. Much to my surprise it landed here by Friday. Postmarked the same day ordered. It did the trick and the quality was superb as usual. My old gal never shot so good. Many thanks!


South Africa


Hey ARH,

My 12 year old tuned TX needed a refurb. Didn't think the old APEX kit could be improved. What a big surprise. Send me up another Survival kit. That new spring is the trick.




Thanks for the fast service on the Wischo 70 parts. The old gal is back at it. Got another crow at 60 plus yards. He had no chance with CPL's blazing at him at over 840 fps.

DL. Wisc.


Hey Jim,

Thanks for the kit and the advice. Much appreciated. I went with some bad forum advice and got a very heavy magnum spring from a competitor. All I achieved was a bunch of recoil, a broken scope, and less power than the softer kit you sell. Lesson learned. Thanks!

SR. Texas



I always appreciated the fine work and service you are known for. You were the only place in the day to buy a TX200 and get a tune done. I remember those days fondly. I'm sort of glad you moved on. I can only imagine if you were still the AA distributor today the TX would be on Mark 40 some. Imagine that. LOL!

Terry, TN.


They say 850 fps in a .177 R9 is hot these days shooting CPL's. I guess they never seen the R9TK's of old. You built 7 for me and most ran nearly 970 fps with 7.9 gr CPL's and from a 10" moderated bull barrel. Bring those days back again.

Terry D., CT.


Hi Jim

I went to a competitors shop to look around. Sorry I'm just ate up with airguns :) When I peered back to the work bench I had seen the owner, a well known tuner and another enthusiast spec'ing out two Maccari tune kits they purchased on the sly. That said it all. I just sent out another order for a VRT kit.

BR.  MI.


Please note.

Due to " build quality issues"  with many economy minded foreign airguns ( Chinese, Spanish, Turkish etc.) the parts listed here as well as other universal parts from any maker, may have a reduced lifespan. Reason being poor quality over-sized barrels and receiver tubes and no barrel choke. ( Gun basically dry fires every round) Often the wrong parts are selected and installed by the inexperienced end user making a bad situation even worse. Installing a spring on a smaller guide than the ID. of the spring will reduce it's life and cause vibration and canting. Over-lubing and using the wrong type or size of seal will reduce life as well as shooting undersized pellets. Overly heavy or light weight pellets are bad in spring guns as well. When we do not offer kits for guns, it's often because the gun itself is prone to parts destruction and it's not wise to invest time into those types of guns. The clue that your gun is one of these is pretty simple. When the factory provided OEM parts have little longevity, that's a clear sign of more of the same to come. Look under the TX 200 Survival kit for pellet weights that are acceptable to use in spring guns.

We have several domestic and foreign dealers selling Maccari-ARH spring kits. Please ask who is making all the components as many just buy springs and then list them as Maccari-ARH kits.