AIR GROUP KIT FOR MSR ASSAULT SNIPER WELL (MB4411JOULE 3)

BRAND WELL

Air well group for series (4401,4402,4403,4404, 4410, 4411,4412… etc).
For MSR ASSAULT SNIPER

Anti-yielding steel spring.
Metal piston plus oversized O-RING.
Spring guide in cushioned metal.
(with about 3 JOULE power spring).