PTS MEC Hop Up (GBB version) (2pack) - Black+Purple

Stop wasting gas pressure and dropping FPS consistency due to worn internal components. The PTS MEC GBB Hop Up Bucking 2-Pack represents a major technological jump forward in drop-in compression parts, engineered from the ground up by veterans to handle the unique stresses of gas blowback rifles and pistols.

Advanced Air-Seal Architecture & Dual Contact Patches The external profile of the MEC rubber is engineered with an intentionally narrowed inner entrance diameter alongside extra material coverage across the open-cut bridge area of the inner barrel. This design closes common structural gaps to eliminate compression leaks during violent slide or bolt cycles, maximizing gas efficiency. On the inside, the contact patch features two separate, perfectly balanced indexing pressure points. By applying perfectly symmetrical pressure to both sides of the BB simultaneously, it centers the projectile down the bore and generates an exceptionally stable backspin for flat, repeatable downrange tracking.

Dual-Hardness Weather & Heavy-BB Selection To handle varying environmental conditions and field setups, this twin pack delivers two distinct durometer configurations:

• Black Bucking (60 Degree): Tailored for standard velocities (295–390 FPS). The softer rubber compound retains high elasticity during freezing cold weather operations, keeping your hop lines active when standard rubbers stiffen and fail.

• Purple Bucking (70 Degree): Tailored for high-pressure or upgraded builds (360–460 FPS). This harder compound stands up effortlessly to heavy-weight ammo (0.30g+) and high-pressure Green Gas or CO2 setups.

Key Technical Features:

• Dual-Point Internal Contact: Applies identical, split-point backspin to the BB for razor-straight trajectory lines.

• Narrowed Entrance Diameter: Creates a high-efficiency air seal against the nozzle to maintain velocity stability.

• Weather-Adaptive Two-Pack: Contains a 60° Black cold-weather bucking and a 70° Purple heavy-BB option.

• Professional GBB Compatibility: Fits TM MWS AR-15, TM Hi-Capa/1911, VFC Umarex Glock Series, and SIG Air P320-M17/M18 platforms.

Field & Maintenance Recommendations The PTS MEC kit fits seamlessly into standard Tokyo Marui MWS gas rifles, TM-spec pistols, and VFC/SIG gas blowback lines utilizing VSR-style hop setups. To install, ensure your inner barrel cut area is completely free of old grease or dirt. Slip the bucking on cleanly without twisting the contact points. Never spray silicone oil directly onto the interior contact patch of the bucking, as a greasy contact patch temporarily cancels out backspin friction until it is completely shot clean.