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BOLT Airsoft CNC Performance Aluminum Ported Piston w/ Full Steel Teeth (Model: Piston Only)

ID: 86140 (PT-BA-19-1)
M4GB19F-1 (Aluminum Piston)
BOLT859188861404M4GB19F-1 (Aluminum Piston)86140
5.0 stars, based on 2 reviews
BOLT Airsoft CNC Performance Aluminum Ported Piston w/ Full Steel Teeth (Model: Piston Only)
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The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.


  • Lightweight aluminum piston set with removable steel rack gear
  • Precision CNC machining
  • Higher strength and durability compared to standard parts
Material: Aluminum Piston, Steel Teeth

Manufacturer: BOLT Airsoft

About BOLT

Bolt Airsoft excels in bringing realism to the Electric Airsoft rifle market through their patent pending Bolt Recoil Shock System (B.R.S.S. for short.) Their goal is to combine the advantages AEGs have such as performance, consistency, and reliability with the often sought after recoil impulse from a gas blowback system. This unique feature works by transferring the kinetic energy from the piston cycling to a weight system in the stock to generate the simulated recoil. Paired with high quality externals, Bolt Airsoft offers a line of excellent ready-to-play guns that also make for great starting platforms for project guns and upgrades.

2 Customer Reviews

(Write a review)

by John S. on 01/18/2022
"Hey guys so used this for my new build and it works fantastic! Version 2 Gearbox
Here is the parts list, I mostly used guarder for everything except for a few things.
This compression set works great together!
SHS green nozzle
Guarder piston head, sp120 spring, cylinder head, advanced tappet plate, cylinder head
Bolt ported piston
by Dane A. on 01/21/2018

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