The classic Tiberius magfed pistol (now First Strike Hero), foundational to modern magfed and First Strike play.
Technical Specifications
Operation
Mechanical pistol (magazine)
Firing Modes
semi-auto
Caliber
.68
Feed System
Magazine
Air Source
12g CO2 / HPA
Operating Pressure
~250-300 psi
Weight (unloaded)
1.4 lbs
Street Price
$120-220 (used)
Maintenance
Low
Notable features: First Strike pioneer, Magazine fed, Compact, Carbine-kit ecosystem
Pros & Cons
Pros
Historic magfed platform
FSR accuracy
Carbine convertible
Cons
Legacy branding
Low capacity
Best for: Magfed collectors, Scenario, FSR shooters
Setup & First-Day Tuning Guide
Function-Test Magazines Dry — Seat each magazine in the Tiberius Arms T9.1 until it clicks. Partial seating is the #1 cause of misfeeds — a mag that wobbles is not fully seated.
Break In New Magazine Springs — Load 15 rounds in each new magazine and leave overnight. Repeat 2–3 times. Stiff factory springs cause intermittent feeds that mimic gun problems.
Bore-Match Barrel to Ammo Type — First Strike rounds need a tighter bore (~.685") than standard .68 balls (~.689"). Install a bore insert kit and match to each ammo type before chronographing.
Chrono Each Ammo Type Separately — FS rounds and round balls produce different velocities. Chrono both and confirm each stays under your field limit. Check the field's FS rules first.
Label & Test Magazines Individually — Number each magazine and function-test with 5 rounds. Weak springs or dented feed lips cause intermittent issues that look like gun problems.
Clean Breech After Every Session — FS rounds leave polymer residue that shaves the tailfin on chambering if buildup is left. Clean the breech with a patch and isopropyl after every outing.
Maintenance Schedule
Interval
Task
Detail
After every outing
Barrel, bolt & exterior clean
Squeegee twice, bolt wipe, screws snug.
Every 5 sessions
Bolt O-ring lube & cup seal check
Clean with isopropyl, dry, apply Dow 33. Inspect cup seal — replace if deformed.
Every 6 months
Valve & fitting service
Re-lube all O-rings. Check all fittings and inline regulator if present.
Annually
Full teardown & O-ring replacement
Complete disassembly, full O-ring kit replacement, inspect springs.
Simple pistol upkeep; keep magazines clean.
Common Problems & Troubleshooting
Magazine misfeeds
Cause: Partial seat; weak spring; debris
Fix: Reseat the magazine firmly until it clicks. Inspect feed lips; replace the spring if weak.
First Strike rounds tumble
Cause: Bore too large for FS projectile
Fix: Install a .685" bore insert. FS rounds need a tighter bore than round balls.
Round balls roll out barrel
Cause: Bore too tight
Fix: Switch to a .689" bore insert or barrel. FS and round balls need different bore sizes.
Ball breaks on chambering
Cause: Dirty breech shaving FS tailfin
Fix: Clean the breech with a patch and isopropyl after every session.
Upgrade Path
Carbine kit
Magazines
HPA adapter
Frequently Asked Questions
Is the Tiberius Arms T9.1 good for beginners?
Yes, with some paintball experience. The Tiberius Arms T9.1 rewards players who understand basic maintenance and operation.
Does the Tiberius Arms T9.1 run on CO2 or HPA?
Compatible with 12g CO2 / HPA. CO2 works but HPA gives significantly more consistent velocity and is better for long-term seal health.
What is the operating pressure of the Tiberius Arms T9.1?
The Tiberius Arms T9.1 operates at ~250-300 psi. Match your regulator output to this spec.
How hard is the Tiberius Arms T9.1 to maintain?
Easy — basic bolt cleaning every few sessions. Simple pistol upkeep; keep magazines clean.
What loader does the Tiberius Arms T9.1 need?
Mag-fed guns use proprietary magazines, not hoppers.
How much does the Tiberius Arms T9.1 cost?
New: $N/A MSRP, typically $120-220 (used) on the street. Used prices vary — check BST forums and eBay for current asking prices.
What barrel thread does the Tiberius Arms T9.1 use?
The Tiberius Arms T9.1 shoots .68 caliber. Confirm the specific thread pattern for your variant before ordering a barrel.
What firing modes does the Tiberius Arms T9.1 support?
Supported modes: semi-auto. Most recreational fields require semi-auto only.
How heavy is the Tiberius Arms T9.1?
1.4 lbs unloaded. With a full hopper and HPA tank, expect roughly 3.9–4.9 lbs total.
Is the Tiberius Arms T9.1 worth buying?
The classic Tiberius magfed pistol (now First Strike Hero), foundational to modern magfed and First Strike play. Strengths: Historic magfed platform, FSR accuracy. Trade-offs: Legacy branding, Low capacity.