M4/AR-15 bipod with Quadrail and M-Lok mont

M4/AR-15 bipod with Quadrail and M-Lok mont. This model of bipod is for all famous tupe of ar-15/m4 handguard.Prefer infill: 100%Minimum infill: 50%Prefer material: PETG (or stronger) To assemply you need:2 (12x5mm) springs2 M4x25 screws and nuts2 M3x15 screws and nutsOptional 2(12x80mm) springs (To make it easier to adjust the stand's height.)For Quadrail version you also need extra 2 M3x30 screws and nuts. To ensure the stand locks correctly, a blocking ring must be placed under