The Action Army AAP_18 is a spare part dedicated to the maintenance of the AAP-01 Assassin. This rear sight screw holds the rear sight and nozzle / BBU block in place to ensure stable operation of the GBB breech.
Its specific M3 format avoids mechanical interference with the bolt and respects the replica's original dimensions.
Specifications AAP_18
Part type: rear sight mounting screw
Compatibility: Action Army AAP-01 Assassin
Technical references: Ref 18 / AAP_18
Dimensions: M3x2.6 to M3x2.8
Material: steel for enhanced mechanical strength
Finish: anti-corrosion black oxide
Recess: hexagon socket compatible with 2 mm Allen key
Mounting: flush countersunk head limits internal friction
Packaging: sold individually
Maintenance highlights GBB
A small part essential to the smooth operation of the blowback system.
Keeping the BBU stable: this AAP-01 blowback unit screw stabilizes the nozzle block and reduces parasitic internal movements. You can maintain a smoother breech cycle and avoid malfunctions due to loosening.
Action Army original dimensions: the specific M3 format respects the tolerances of the AAP-01 rear sight screw. You can install a suitable part without the risk of blocking the moving breech with a screw that's too long.
Durable steel construction: Black steel is more resistant to wear and repeated disassembly. This sturdy design ensures long-lasting security for the rear sight.
Advantages AAP-01 Allen screw
Designed for rapid maintenance of your replica.
Compact countersunk head: the flush head reduces the risk of internal snagging. It also enables clean, discreet mounting on the top of the GBB.
Simple Allen mounting: The hexagonal recess makes it easy to tighten in confined spaces. With a 2 mm Allen key, installation is quick and easy.
Threadlocker compatible: You can apply a low threadlocker to limit loosening caused by blowback vibrations. This solution improves durability.
AAP-01 Assassin compatibility
Action Army AAP-01 Assassin airsoft 6 mm
Screw installation AAP_18
Difficulty: Easy (5 min)
Tools required: 2 mm Allen key
Prerequisites: Minor disassembly
Resource: Use a low thread locker to limit loosening
Advantages AAP-01 screws
Compact, strong fastener.
Precise assembly in original format.
Durable, unobtrusive black steel.
Reliable BBU block support.
Easily optimize maintenance of your AAP-01.
Expert opinion rear sight screw
"On GBB platforms like the AAP-01, a simple screw can change the regularity of the cycle. This original Action Army part clearly does the job and avoids the classic worries of a poorly maintained breech. In the airsoft workshop, it's typically the reference we always keep in stock."