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M4 Compression Upgrade Kit

Availability: Only 1 left in stock1
Brand: ZCI
Product Code: A001
Product viewed: 848
Shipping Code: LL - Large Letter

(Order upto 10 products with same LL code for just £1.50 1st class delivery)

Available Options

* Cylinder Type:

Custom upgrade compression kit that has been put together using components which offer the best compression fitment.  

This kit provides the following upgrades:

- Rocket aluminium nozzle with single o-ring (21.4mm)
- XT aluminium cylinder head with padded bottom and double o-rings
- ZCI Stainless steel cylinder (72mm length, 23.6 inner diameter, 25.5 outer diameter)
- ZCI 8 vent aluminium piston head
- ZCI 14 steel tooth piston

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