Hop-Up chamber for WE AK/SCAR/SVD/PDW series (WEPSTAS) (Ver.2026)

High-quality CNC-machined T.N.T. WEPSTAS Hop-Up Chamber VER.2026 designed for WE GBB rifles including the PDW, SCAR, Thompson, AK and SVD series. The new generation features a precision one-piece chamber construction, an improved adjustment dial resistant to unwanted loosening, optimized BB feeding position and more stable Hop-Up bucking positioning.

T.N.T. uses the designation WEPSTAS to indicate its broad compatibility with WE GBB platforms: WE PDW, SCAR, Thompson, AK and SVD.

The Hop-Up chamber is precision CNC-machined as a single piece. Its precise dimensions and rigid one-piece construction minimize unwanted play and provide stable chamber positioning.

The 2026 version features a redesigned Hop-Up adjustment dial. CNC-machined from aluminum, the dial covers more than 180° of the chamber, providing a tight and stable fit and helping prevent unwanted adjustment changes caused by recoil and vibration during shooting.

Optimized feeding geometry ensures consistent BB positioning inside the chamber, contributing to more stable shooting performance. The chamber also features T.N.T.'s wide positioning nub design, which helps maintain correct Hop-Up bucking positioning and prevents displacement caused by vibration.

The package includes a dedicated T.N.T. H.L.R. WEPSTAS 60° Hop-Up bucking. H.L.R. (Hyper Long Range) uses a wide contact surface for stable Hop-Up pressure and is particularly suitable for use with heavier BBs.

The chamber requires a dedicated T.N.T. WEPSTAS Hop-Up bucking and is not designed for standard universal Hop-Up buckings. It is compatible with MARUI GBB-spec inner barrels.

Features:

• New-generation T.N.T. WEPSTAS Hop-Up Chamber VER.2026.
• Precision CNC-machined one-piece construction.
• Minimized unwanted chamber play.
• Improved CNC-machined aluminum adjustment dial.
• Adjustment dial with more than 180° chamber coverage.
• Improved resistance to adjustment changes caused by recoil and vibration.
• Optimized feeding geometry for consistent BB positioning.
• T.N.T. wide positioning nub design to prevent bucking displacement.
• Compatible with MARUI GBB-spec inner barrels.
• Dedicated T.N.T. H.L.R. WEPSTAS 60° Hop-Up bucking included.

Compatibility:

• WE PDW / EMG KAC PDW-M2.
• WE SCAR-L.
• WE SCAR-H.
• WE Thompson.
• WE AK74.
• WE AK-PMC.
• WE SVD.

Package includes:

• 1× T.N.T. WEPSTAS Hop-Up Chamber VER.2026.
• 1× T.N.T. H.L.R. WEPSTAS 60° Hop-Up bucking.

Installation:
Due to dimensional differences and manufacturing tolerances between individual airsoft guns, minor fitting adjustments or modifications may be required during installation. For optimal performance, the manufacturer recommends installation by users with basic airsoft DIY experience or by a professional airsoft technician.

Official manufacturer's guide for WE SCAR:
T.N.T. WE SCAR Kit Guide – installation, adjustment and important notes