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Gearboxes and STSs




Product Image Item Name Price+
ZCI V2 Stainless Steel Screw Set

ZCI V2 Stainless Steel Screw Set

These replacement screw sets are made from stainless steel and are of much better quality than stock screws.
$3.50

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ZCI V3 Stainless Steel Screw Set

ZCI V3 Stainless Steel Screw Set

These replacement screw sets are made from stainless steel and are of much better quality than stock screws.
$3.50

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PPS STS - Shock Transfer System for M4 Rifles

PPS STS - Shock Transfer System for M4 Rifles

This is a shock transfer system (STS) from PPS (SHS) that is designed to transfer the impact of the piston on the front of the gearbox to the body of...
$16.00

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SHS STS - Shock Transfer System for M4 Rifles

SHS STS - Shock Transfer System for M4 Rifles

This is a shock transfer system (STS) from SHS that is designed to transfer the impact of the piston on the front of the gearbox to the body of the...
$16.00

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ZCI Reinforced Gearbox – 8mm, QD Spring Guide, Micro Switch

ZCI Reinforced Gearbox – 8mm, QD Spring Guide, Micro Switch

These ZCI reinforced gearboxes have a number of added features that make them stand out from normal V2 gearboxes. These cast zinc versions use the...
$30.00

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Lonex V2 Geabox Shell with 8mm Ball Bearings and Tappet plate

Lonex V2 Geabox Shell with 8mm Ball Bearings and Tappet plate

Here we have the Lonex V2 gearbox shell. Lonex puts a lot of engineering into all their parts rather than just copying others, and this gearbox is a...
$50.00

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Lonex V3 Geabox Shell with 8mm Bearings and Tappet plate

Lonex V3 Geabox Shell with 8mm Bearings and Tappet plate

Here we have the Lonex V3 gearbox shell. Lonex puts a lot of engineering into all their parts rather than just copying others, and this gearbox is a...
$54.00

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ZCI Reinforced Full Gearbox - Fully Assembled - QD Spring Guide

ZCI Reinforced Full Gearbox - Fully Assembled - QD Spring Guide

These ZCI reinforced gearboxes have a number of added features that make them stand out from normal V2 gearboxes. These cast zinc versions use the...
$85.00

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ZCI Reinforced Aluminum Gearbox – 8mm and QD Spring Guide

ZCI Reinforced Aluminum Gearbox – 8mm and QD Spring Guide

These ZCI reinforced gearboxes have a number of added features that make them stand out from normal V2 gearboxes. These aluminum versions are...
$100.00

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