##skip_main ##skip_menu ##skip_search
Mirka Customer Support
Your cart is empty
Add the chosen goods to your cart. Are you wondering where to begin?
Take a look at bestsellers our visit our help room.
Spare Parts For PCP Air Rifles
FX STX Superior is the successor of the FX STX Liner Slug A series of spare
barrel liners. The Heavy version has a special twist rate designed for heavy
pellets and slugs.
Temporarily Unavailable
€ 118.0
Secure shopping and payment fast delivery to many EU countries 
Excellent customer support from specialists – for over 15 years 
-20% on selected product in the loyalty program 
New videos and reviews every day 6000+ reviews from our customers FX STX Superior is the successor of the FX STX Liner Slug A series of spare barrel liners. The rifling is pressed in from outside, resulting in a very smooth finish with minimal friction. The entire manufacturing process has been tweaked and optimized to ensure the best possible accuracy with even smaller tolerances.
The Heavy version has a special twist rate which was especially designed for heavy pellets and slugs.
The Smooth Twist X platform allows you to easily change calibers or twist rates without the need of any further modifications done to your FX airgun.
Be the first one to rate this product and help others decide.
By submitting your review, you are agreeing to our review guidelines. It will be published once we make sure it corresponds with our terms and conditions.
4 minutes Buyer's Guide
Whether you own a PCP air rifle or are just thinking about getting one, you've probably encountered the term „pressure regulator.“ But what is it, and why is it so important for airguns? There isn't much info available online, and most manufacturers merely state whether the airgun has a regulator or not. In this article, we'll walk you through everything in detail.
1 minutes Video News
This time we tested the most popular PCP air rifle from the Swedish manufacturer FX Airguns – the FX Impact M3. Check it out.
1 minutes Video News
We finally got our hands on one of the most anticipated airguns of the season – the FX DRS from the Swedish company FX Airguns. Take a look at what awaits you in the packaging.
1 minutes Video News
Swedish manufacturer FX Airguns introduces the new FX Panthera, an extremely accurate PCP air rifle specially designed for competition shooting.
1 minutes Video News
Once again we participated in the IWA 2025 trade show, which is held in Nuremberg, Germany. In addition to our own booth, we scoped out new products from manufacturers such as Umarex, Evanix and others. Join us for a look at the most interesting highlights.
1 minutes Video News
Which long air rifles impressed us the most last year? Find out that and more in today's video.
