※ The inner barrel and HOP-UP bucking are NOT included, which need to be purchased separately.
※ It is recommended with "4UANTUM Friction Pro" HOP-UP Bucking. (GBB SPEC.)
※ The plastic tube inside the assembly is for transport purposes only and can be removed.
※ Compatible BB weight limit and shooting performance still depends on different settings, gas effect or other variables.
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Installation references:
For APFG MCX GBB series:
Compatible with APFG MCX GBB series (Rattler, Legacy, SPEAR LT, Rattler LT, RSAR, SURG, MCX HUNTER models.)
Compatible with BPW MCX GBB series (With APFG MCX GBB system.)
NOT compatible with APFG XM7 (SPEAR) GBB (Different HOP-UP design.)
NOT compatible with APFG MPX GBB series (Different HOP-UP design.)
NOT compatible with MCX GBB series from other AIRSFOT brands. (APFG ONLY.)
NOT compatible with non-MCX AIRSFOT GBB model.
NOT compatible:
Japan specification AIRSOFT GBB inner barrel/precision inner barrel products may not be applicable or require additional processing before installation due to different design specifications and slots.
Including PDI, KM, Laylax inner barrel products, are NOT applicable.
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Specifications:
● Product Brand : 4UAD (Taiwan)
● MADE IN TAIWAN
● Material : Aluminum CNC, Steel, Rubber
Content :
● HOP-UP Chamber Set x1
4UANTUM "Magnus Pro" Precision TDC HOP-UP Chamber (APFG MCX GBB)
Machined from a single billet of 6061 aluminum as a one-piece housing, the MAGNUS PRO MCX features our proven self-centering tri-lug inner barrel lock design and true TDC (Top-Dead-Center) adjustment mechanism. In addition to delivering improved accuracy and consistency, the chamber incorporates corrected cycling geometry. During operation, the chamber interfaces with the bolt carrier rather than the nozzle, helping prevent loading nozzle damage caused by repeated impact.
Because the APFG MCX GBB series uses the Hop-Up chamber as part of the barrel-mounting interface, the MAGNUS PRO MCX also improves overall structural rigidity through its stronger, precisely machined construction. The adjustment wheel is easily accessible by any slender tools through the handguard openings or M-LOK slot, allowing smooth incremental adjustments on the go—without disassembly or dedicated tools.
● Center lock system : patented inner barrel locking system.
● HOP-UP bucking shroud : centered bucking and stabilize output velocity.
● Quick HOP-UP adjustment : adjust HOP-UP through the wheel front the chamber with any slender tools.
● True TDC articulation : machine press ring parts to minimizing wobble and giving you stable contact. (Comes with two kind of nub /press ring options)
