The LM4 RIS PTR buffer tube has the same diameter of a MilSpec Stock which allows operators to customize to their weapon configuration

Exact replicas of H&K Optics mounts and 30mm adapters included

PVC American Flag patch

Ear protection is important and the i4 provides it while not being obstructive

Length: 112

PDI 6.01 Steel 4.3 hicapa inner airsoft trigger  The LM4 RIS PTRHigh quality SUS304 stainless steel construction minimizes vibration Precision tightbore 6. 01mm (+ 0. 002mm) inner diameter Improve accuracy and consistency of your gun Smooth polish to reduce friction Improved air seal and compression increases power Made in Japan