Airsoft hop-up units and buckings
( number of products: 126 )Hop-Up units and buckings
Hop-up is a system that puts a spin on the BBs shot out of airsoft gun. It uses the phenomenon called the Magnus Effect. The trajectory of a flying BB is flattened which makes it similar to the trajectory of a projectile. In practice, it is a properly formed silicon or rubber part of the hop-up unit that rubs against passing BB and in result gives it a backspin.
The simplest explanation for the operation of the Hop-Up unit is that the nub adds backward rotation to the BB. The direction of the spin (backspin) imparts an upward force that lifts the BB and balances the power of gravity. As a result, it allows for a longer flight path. The spin depends on how tight is the hop-up rubber. If we are using heavy BBs we need to use the rubber which is tighter and puts bigger pressure on the pellet. It also works the other way round - when the light ball is too heavily curled it can fly above the shot line.
In our wide range of parts and accessories for airsoft guns, you can find various models of hop-up chambers and buckings. We have products from over a dozen manufacturers including Lonex, SHS and AirsoftPro. Many of them will satisfy even the most demanding airsoft players and technicians. Ideally suited for strength and endurance tuning of replicas. Available hop-up units are made of various materials, including aluminum, metal or polymer.

Hop-Up TDC Magnus™ rotary chamber by Specna Arms with Helium™ Flat Hop rubber for M4/M16 replicas
15,02 € including VAT/1pcs
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AUTOBOT 70° HU Bucking for GBB Pistols
7,26 € including VAT/1pcs
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Hop-Up Eraser T.N.T. FLAT 60° for AEG replicas (silicone version)
13,02 € including VAT/1pcs
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Wide Hop-Up T.N.T. New Wide 70° Spacer
6,76 € including VAT/1pcs
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Hop-Up Eraser T.N.T. FLAT 50° for AEG replicas
13,02 € including VAT/1pcs
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Set of 2 Hop-Up Silverback SRS spacers
3,00 € including VAT/1pcs
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Set of 4 Hop-Up Silverback 80° elastics
17,52 € including VAT/1pcs
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DECEPTICONS 70° HU Bucking for GBB TM/WE/KJW Replicas
7,26 € including VAT/1pcs
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Hop-Up Bucking T.N.T. TR-HOP 50° for AEG Replicas
23,78 € including VAT/1pcs
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Hop-Up Eraser T.N.T. FLAT 70° for AEG replicas (silicone version)
12,52 € including VAT/1pcs
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3L hop-up chamber for Hi-Capa/1911 replicas
71,10 € including VAT/1pcs
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Hop-Up Adjustment Lever for Glock/M1911/Hi-Capa Replicas
7,01 € including VAT/1pcs
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T.N.T. T-HOP 50° Hop-Up Bucking for AEG Replicas
21,28 € including VAT/1pcs
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Hop-Up eraser T.N.T. TR-HOP 60° SNIPER for AEG replicas
32,80 € including VAT/1pcs
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STD Positioning Hop-Nub - 80°
6,76 € including VAT/1pcs
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Silicone Hop-Up Bucking T.N.T. H.L.R. 60° for GBB Replicas
21,28 € including VAT/1pcs
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THO-R Eraser for Marui/KJW Gas Pistols
16,27 € including VAT/1pcs
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Hop-Up Eraser T.N.T. TL-HOP 60° for AEG replicas
23,78 € including VAT/1pcs
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Hop-Up Eraser T.N.T. TL-HOP 50° for AEG replicas
21,28 € including VAT/1pcs
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Set of 4 Hop-Up Silverback 60° elastics Type GBB
17,52 € including VAT/1pcs
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Complete Hop-Up CNC Chamber for M4/M16 Replicas
46,31 € including VAT/1pcs
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60° AEG HU Hybrid System Bucking - Black
8,76 € including VAT/1pcs
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Hop-Up Ultra Precision SRE (R/H) chamber for SRS/HTI
65,09 € including VAT/1pcs
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DECEPTICONS 2021 HU 70° Bucking for GBB TM/WE/KJW Replicas
8,76 € including VAT/1pcs
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DECEPTICONS 2021 HU 80° Bucking for GBB TM/WE/KJW Replicas
8,26 € including VAT/1pcs
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SUPER 60° HU Bucking for GBB TM/WE/KJW Replicas
8,76 € including VAT/1pcs
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Hop-Up T.N.T. New Wide 80° Spacer
6,76 € including VAT/1pcs
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Rotary Hop-Up Chamber for Specna Arms ONE™ Replicas
10,51 € including VAT/1pcs

TR-HOP bucking for VSR replicas (Silicone) - 60°
21,28 € including VAT/1pcs
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TR-HOP bucking for VSR replicas (Silicone) - 70°
23,78 € including VAT/1pcs
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Hop-Up Bucking T.N.T. H.L.R. 50° for AEG Replicas
30,04 € including VAT/1pcs
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Hop-Up Bucking T.N.T. H.L.R. 60° for AEG Replicas
30,79 € including VAT/1pcs
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Hop-Up Bucking Air Seal Chamber Compact for AEP Replicas (Soft Type)
18,77 € including VAT/1pcs
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Silicone Hop-Up Bucking T.N.T. H.L.R. 70° for GBB Replicas
21,28 € including VAT/1pcs
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Silicone Hop-Up Bucking T.N.T. H.L.R. 70° for VSR Replicas
23,78 € including VAT/1pcs
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Pressure frame for the hop-up chamber VSR-10 system
12,52 € including VAT/1pcs
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R-Hop patch N07 Gen 2
25,03 € including VAT/1pcs
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Gate EON Hop-Up Chamber - Titan/Violet
81,12 € including VAT/1pcs
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Hop Up chamber for Umarex G Series replicas (gen 4/5)
75,11 € including VAT/1pcs
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UNI-HOP RH80 Hop Up Bucking for GBB Replicas
17,52 € including VAT/1pcs
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UNI-HOP RH80 Hop Up Bucking for GBB Replicas (Competition Grade)
21,53 € including VAT/1pcs
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One-piece Hop Up T.N.T THE ONE chamber for 1911/Hi-Capa type replicas Red
50,07 € including VAT/1pcs
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Hop-Up Eraser T.N.T. FLAT 60° for AEG replicas
13,02 € including VAT/1pcs
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Hop-up T.N.T. chamber for EC airsoft rifles
103,65 € including VAT/1pcs
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Hop-Up Eraser T.N.T. TL-HOP 60° for GBB replicas
23,78 € including VAT/1pcs
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Set of 4 Hop-Up Silverback 80° elastics AEG type
17,52 € including VAT/1pcs
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Set of 4 Hop-Up Silverback 70° rubber bands for AEG replicas
17,52 € including VAT/1pcs
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Set of 4 Hop-Up Silverback 70° rubber bands for SRS/TAC-41 replicas
17,52 € including VAT/1pcs
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Hop-Up chamber for the M4 carbine
6,26 € including VAT/1pcs

Complete Hop-Up Chamber for M4/M16 Replicas
12,52 € including VAT/1pcs
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60° HU Bucking for WE GBB and VSR-10 TM Replicas
7,51 € including VAT/1pcs
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70° AEG HU Hybrid System Bucking - Black
10,26 € including VAT/1pcs
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80° AEG HU Hybrid System Bucking - Black
10,26 € including VAT/1pcs
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70° WONDER HU bucking VSR/GBB - blue
8,76 € including VAT/1pcs
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Hop-Up Ultra Precision SRG (R/H) GBB chamber for SRS/HTI
65,09 € including VAT/1pcs
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Rotary CNC Hop-Up Chamber for M4/M16 Replicas
32,54 € including VAT/1pcs
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Many enthusiasts of airsoft gameplay become concerned over time with replicating the battlefield as realistically as possible. In this context, the flight path of the ball is of great importance. Although the better replicas differ little from their prototypes, relatively lightweight balls yield more easily to the force of gravity than bullets. A Hop-Up chamber or Hop-Up rubber band is a relatively simple solution that gives the balls the right rotation, improving their flight path to a more stable one. Your replica model can also be fitted with Hop-Up chambers or rubber bands. You can find the right product in this category. Find out which ASG Hop-Up system best meets your needs!