PERFORMANCE RangeThe Umbrella R-Hop System increases backspin on your BB, giving it a longer stable flightpath. AccuracyAbility to lift heavier BBs (0.4g+ with sufficient FPS) with better wind resistance. PrecisionConsitency from shot to shot with superior air seal. We suggest the compression system package for perfect airseal. SPECIFICATIONS Rotary Style HopUp Single Piece HopUp Arm 7mm R-Hop Window and HopUp Arm 6.01mm Inner Diameter <5my (Rz) Surface Finish Double O-Ring Cutouts 21.3mm Nozzle Recommended ≤0.36g BBs COMPATIBILTY ROTARY STYLE HOPUP UNITBarrel by itself fits any AEG rifle. Rifles with rotary style hopups usually found on M4 type guns (e.g. G&G, KRYTAC, SPECNA ARMS, G&P, etc.) can also upgrade the HopUp Unit.

PERFORMANCE RangeThe Umbrella R-Hop System increases backspin on your BB, giving it a longer stable flightpath. AccuracyAbility to lift heavier BBs (0.4g+ with sufficient FPS). PrecisionConsitency from shot to shot with superior air seal. We suggest the compression system package for perfect airseal. SPECIFICATIONS     7mm R-Hop Window 6.01mm Inner Diameter <5my (Rz) Surface Finish Double O-Ring Cutouts 21.3mm Nozzle Recommended +0.36g BBs   COMPATIBILTY ROTARY STYLE HOPUP UNITBarrel by itself fits any AEG rifle. Rifles with rotary style hopups usually found on M4 type guns (e.g. G&G, KRYTAC, SPECNA ARMS, G&P, etc.) can also upgrade the HopUp Unit.

Ultra-Quiet foam-filled Carbon Fibre Suppressor with Nylon -14mm threaded Endcaps.  Threading: -14mm (CCW)Length: 69mm, 98mm, 128mmDiameter: 32mmMaterials: Carbon Fibre, Nylon P12Weight: 22g, 24g, 28g Disclaimer:This product is prohibited in the following countries:Switzerland, Belgium, Denmark

Swappable Upper Receiver with Carbon Fibre Kit in 15" for the OCAW XF PRO Series.

Swappable Upper Receiver with Carbon Fibre Kit in 5" for the OCAW XF PRO Series.

Free Floating Carbon Fibre Outer Barrel for M4 style AEGs with dual inner barrel stabilization in the front and the rear. Choose an inner barrel in length at least equivalent to that of the outer barrel for maximum stabilizing effect. HopUp Unit guides are ideal for XFORCE HopUp Chamber (also compatible with other HopUps, e.g., MaxxModel) to provide reliable and stable centering of the HopUp Unit.

Stainless Steel Inner Barrel with guaranteed concentricity and a mirror-like surface finish. AEG HopUp cut in the front with compatibility with any standard V2 rotary style HopUp Units. The rear of the barrel features cuts for stabilizing O-Rings and a crowned barrel exit for consistent gas release. 100% Made in Austria — 100% Stainless Steel

Complete stabilized barrel system for M4 style AEG rifles including complete R-Hop Barrel System with CNC HopUp Chamber and fitting Carbon Fibre Outer Barrel. Includes: R-Hop Stainless Steel Inner Barrel with CNC HopUp Carbon Fibre Outer Barrel with Dual Stabilisation 100% Made in Austria — 100% Umbrella Armory 

Ultra-Quiet foam-filled Carbon Fibre Suppressor with Nylon -14mm threaded Endcaps.  Threading: -14mm (CCW)Length: 69mm, 98mm, 128mmDiameter: 32mmMaterials: Carbon Fibre, Nylon P12Weight: 22g, 24g, 28g Disclaimer:This product is prohibited in the following countries:Switzerland, Belgium, Denmark

Swappable Upper Receiver with Carbon Fibre Kit in 11".  Compatible: Krytac, VFC, G&G, G&P, E&C, CYMA, Specna Arms Guarantee: Send us your rifle for free installation Suggested: Combine with https://umbrellaarmory.eu/products/xr-barrel

Nylon Piston head with partial metal teeth on the pickup side. Weight: 18 g Shipping weight: 26 g

Includes: Krytac Ported 3/4 CylinderKrytac Air NozzleKrytac Cylinder HeadKrytac Piston + HeadKrytac Tappet Plate + Spring

Weight: 1 g Shipping weight: 1 g

Includes: Krytac Ported 3/4 CylinderKrytac Cylinder Head