





Stalker AAP-001 Upgrade kit 250MM Barrel
This is the top of the AAP-01 upgrade ladder: the longest Morpheus barrel we make, paired with everything you need to actually make that length count. Reach out further, keep your BBs flat, and turn a stock pistol into the most precise gun on your team.
What's included
- "Morpheus" Dual Bore AAP-01 Barrel 250MM – 6.05 mm SUS304 seamless stainless steel with a dual bore tapered end crown and an enlarged, unbridged window, for maximum range and accuracy.
- SR Hop Bucking 60° (Purple) – a hybrid between an R-hop and a bucking with an extended patch, now one of the most used buckings in AAP-01 pistols.
- AAP-01 TDC + Prowler Hop Plate – swaps out the stock hopup parts so you can dial the hop in from the top with a hex key, straight from top dead centre, with a CNC aluminium Prowler nub.
- AAP-01 TDC Hole Tool – places the hole in your upper exactly where the TDC kit needs it.
- AAP-01 Ultimate Spring Set (8 springs) – four recoil springs and four nozzle return springs to match your gas, mags and local temperatures.
- AAP-01 Marine Grade Stainless Steel Screw Set – A4 stainless screws for the upper receiver and internals, two of them with thread lock.
Why buy it as a bundle
At 250 mm, every weak link shows up downrange. The Morpheus barrel and SR Hop bucking deliver the reach and the flat flight path, the TDC kit lets you fine-tune that hop instead of guessing, the spring set keeps the cycle crisp with a longer setup, and the stainless screws keep everything locked down through a full weekend of games. One order, one build session, done properly.
Good to know
- Made for the Action Army AAP-01. The 250 mm barrel is built for carbine and DMR-style builds with an extended outer barrel.
- The TDC kit requires a 2 mm hole in your upper. The included tool makes it foolproof, but if you'd rather not drill, hand it to your local tech.
- Always check your joule output after installation before you take it to the field.
Pairs well with
In stock! Ships within 1-2 business days.
Complimentary shipping & returns

Stalker AAP-001 Upgrade kit 250MM Barrel
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Shipping Information
Use this text to answer questions in as much detail as possible for your customers.
-
Customer Support
Use this text to answer questions in as much detail as possible for your customers.
-
FAQ’s
Use this text to answer questions in as much detail as possible for your customers.
-
Contact Us
Use this text to answer questions in as much detail as possible for your customers.
FAQs
Please read our FAQs page to find out more.
Do I need an account to order?
No, but an account lets you save addresses, review orders, download invoices and manage wish‑lists.
When will my order ship?
Orders placed before 15:00 CET on business days ship the same day if the
items are in stock. A tracking e-mail follows automatically.
Can I change or cancel my order?
Yes, e-mail orders@skirmshop.nl or use the contact form before 15:00 CET on the shipping day
with your order number. After dispatch, changes aren’t possible.
Do you ship outside the EU?
Yes, the shipping rates and import taxes will be calculated at checkout.
What is the minimum age to buy an airsoft replica?
Please check your own governments regulations for the minimum required age.
Don't forget to send your ID.