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View larger CNC Aluminum Piston VSR-10 by Action Army in blue finish.
For bolt-action sniper rifles Tokyo Marui VSR-10 / ONE and clones (Well MB03, BAR-10, etc.).
Version with 90° sear catch (aftermarket upgrade design).
Durable upgrade piston with two Delrin guide rings.
One-way vent holes to enhance performance.
B01-003
Upgrade Steel Spring Guide with Bearing by Action Army in silver finish. For spring bolt-action sniper rifles Tokyo Marui VSR-10 / ONE and clones (BAR-10, Well MB03, etc.). Internal diameter of 7 mm. Durable 303 stainless steel construction suitable even for strong springs. Integrated bearing for smoother compression and easier cocking.
B01-007
VSR-10 Complete Teflon-Coated Cylinder Upgrade Kit by Action Army. Ideal upgrade for sniper rifles like Tokyo Marui VSR-10 / ONE, Well MB03, Novritsch SSG10, and JG BAR-10. Black steel cylinder with teflon coating for smooth piston movement and minimal friction. Durable stainless steel cylinder head and end cap designed for high-power springs.
B01-009
POWER SPRING for Bolt-Action Sniper Rifles by Action Army – spring strength M150. Inner diameter 7 mm. Compatible with VSR-10 / ONE, Well MB03, BAR-10 and similar rifles. Made from spring steel wire.
B01-013
CNC Aluminum Hop-Up Chamber for VSR-10 by Action Army in red. Compatible with Tokyo Marui VSR-10 / ONE, Well MB03, JG BAR-10 and CYMA CM.701. Precision pressure system for accurate long-range shots. Handles heavy sniper BBs (0.36–0.49 g). Compatible with VSR / GBB type inner barrels and buckings. Durable CNC aluminum construction.
B01-040
Cylinder Spacer / Guide Rings Set by Action Army in black. Includes 2 pieces (front and rear spacer). Ensures smooth and precise cylinder movement in VSR-10 rifles. Compatible with Tokyo Marui VSR-10 / ONE, Action Army T10, Well MB03 and other sniper rifles.
This lightweight yet highly durable upgrade part for manual sniper rifles is precision CNC-machined from aluminum, ensuring maximum durability and precision fit. Two Delrin guide sleeves on the piston reduce friction and allow smooth operation inside the cylinder. The one-way vent holes improve air compression and boost overall power. This is an ideal piston for upgrade builds focused on performance, durability, and consistency. Please verify your rifle’s sear angle before purchase. We recommend combining it with other upgrade parts by Action Army.
| Color | Blue |
| Body/receiver material | Metal |
| Piston head | Metal |