Jaeger Precision Marui M4 MWS GBB "PUCK" Short Stroke/Buffer Spacer Set Of 4.

This set contains 4 Pucks which are dual purpose to be used for short stroking or spacing your buffer tube.

This set can be used to short stroke your bolt travel. This will give you an increased cycle rate as the bolt doesn’t need to travel as far.

Alternatively they can be used as buffer spacers to stop the bolt overtravel from causing damage to your lower receiver.

The 4 Pucks are different sizes ranging from (roughly) 2mm, 4mm, 6mm and 8mm. The shortest setting being 2mm and the largest setting being roughly 20mm

The Pucks are made from a flexible rubber like material, demonstrating good chemical and water resistance, and long-term stability.