DPM Heckler & Koch G36/ 243 Recoil Reduction Buffer Assembly 6 Adjustable User Settings RBA/H&K G36. The long spring (more coils) is stronger and has a heavier pound rating than the shorter spring. The Spring Plugs because of the different length change the total force of the recoil system (slide full open position) more details at the installation instructions. As lead the evolution of recoil reduction technology products may change versions (new design with different springs with or without plugs washers etc.) without any prior notice. Specifications for DPM Heckler & Koch G36/ 243 Recoil Reduction Buffer Assembly: Manufacturer: DPM Gun Make: Heckler & Koch Gun Model: Heckler & Koch HK243 Heckler & Koch G36 Fabric/Material: Spring Steel Features of DPM Heckler & Koch G36/ 243 Recoil Reduction Buffer Assembly Significant recoil reduction Better double-tap concentration Better control and greater accuracy Faster follow up shots when using the optics. Improved firing speed Slide and Frame Protection Package Contents: DPM Heckler & Koch G36/ 243 Recoil Reduction Buffer Assembly What firearm models does the manufacturer say DPM Heckler & Koch G36/ 243 Recoil Reduction Buffer Assembly is compatible with? The manufacturer says that DPM Heckler & Koch G36/ 243 Recoil Reduction Buffer Assembly is compatible with Heckler & Koch G36 Heckler & Koch HK243DPM RBA/H&K G36: Heckler & Koch G36/ 243 Recoil Reduction Buffer Assembly 6 Adjustable User Settings