List of products by brand Retroarms

Retro Arms is a world-renowned Czech manufacturer specializing in ultra-premium, CNC-machined airsoft internal parts and upgrade components. World-famous for their indestructible EN AW 7075 T651 aircraft duralumin gearboxes, rotary hop-up chambers, custom triggers, and external accessories, Retro Arms sets the ultimate standard for high-fps, high-rate-of-fire, and precision airsoft builds.

Engineered and manufactured in the Czech Republic, Retro Arms is the gold standard for high-performance airsoft internals, providing CNC-machined components designed to withstand extreme spring tension and high rates of fire.

Aircraft-Grade CNC Duralumin Gearboxes

Retro Arms revolutionized the airsoft industry by milling V2, V3, and custom gearboxes from single blocks of solid EN AW 7075 T651 aircraft duralumin. Unlike traditional cast zinc-aluminum gearboxes that fracture under load, Retro Arms CNC gearboxes offer virtually indestructible strength, perfect alignment for bearings and gears, integrated quick-spring-change systems, and QSC spring guides.

Precision Hop-Up Chambers & Custom Hardware

Beyond shell gearboxes, Retro Arms manufactures ultra-precise rotary Hop-Up chambers crafted specifically for M4, AK, and SR25 platforms. Their product lineup includes CNC-milled aluminum selector switches, custom skeletonized triggers, steel tooth pistons, nozzle systems, and external body accessories designed for flawless feeding and airtight compression.

Core Product Lines

  • CNC Gearbox Shells: V2, V3, V2.5 (SR25), M249, and custom Split CNC Gearboxes with QSC systems.
  • Hop-Up Chambers: Precision CNC aluminum rotary chambers for M4/AR15, AK, G36, and P90 platforms.
  • Triggers & External Controls: Custom skeletonized CNC triggers, fire selectors, and magazine catches in anodized finishes.
  • Internal Components: Steel-tooth pistons, double O-ring nozzles, cylinder heads, and spring guides.

Choose Retro Arms for unmatched structural strength, Swiss-grade CNC precision, and flawless airsoft performance.

Close-up studio view of the RetroArms INOX pad hop-up chamber washers.

RetroArms Stainless Steel INOX Pad Hop-Up Chamber Washer (0.1mm - 5 Pack)

In stock
The RetroArms INOX Pad Hop-Up Chamber Washer is a precision-engineered stainless steel shim designed to fit between the hop-up chamber and the gearbox. With an ultra-thin 0.1mm thickness, this 5-pack provides essential fine-tuning adjustments for perfect alignment, optimal air seal, and consistent feeding in your airsoft build.

Precision Alignment: Corrects minor spacing gaps between the gearbox and hop-up unit for consistent BB feeding.
Ultra-Thin Profile: Measures precisely 0.1mm in thickness to allow micro-adjustments in compression.
Durable INOX Stainless Steel: Crafted from high-grade stainless steel to resist wear and deformation under high-stress operation.
5.00 €
Close-up view of the RetroArms CNC-machined POM piston showcasing its pre-installed 14.5 hardened steel teeth rack.

RetroArms CNC POM Piston for Tokyo Marui NGRS (Next Gen Recoil Shock) • 14.5 Steel Teeth

In stock
The ultimate durability upgrade for your recoil shock system. Manufactured by the CNC precision experts at RetroArms, this Next Gen piston is engineered specifically for Tokyo Marui NGRS (Next Generation Recoil Shock) gearboxes. Combining a lightweight, self-lubricating CNC-machined POM body with a heavy-duty 14.5 full steel teeth rack, it easily withstands the high-stress demands of active blowback and recoil mechanisms.

Tokyo Marui NGRS Optimized: Drop-in upgrade compatibility for TM Next Generation Recoil Shock platforms.
CNC-Machined POM Body: Milled from a single block of premium polyoxymethylene for low-friction operation and extreme impact resistance.
14.5 Hardened Steel Teeth: High-strength steel rack protects your drivetrain from stripping under heavy recoil stress, featuring pre-corrected Angle of Engagement (AoE) geometry.
Smooth Cycling: Significantly reduces mechanical drag within the cylinder to optimize rate of fire and battery efficiency.
16.90 €