{"id":105876,"date":"2026-11-08T16:23:51","date_gmt":"2026-11-08T15:23:51","guid":{"rendered":"https:\/\/italytacticalshop.it\/product\/retroarms-ngrs-spring-sicr-with-progressive-wiring-m130\/"},"modified":"2026-11-08T16:23:51","modified_gmt":"2026-11-08T15:23:51","slug":"retroarms-ngrs-spring-sicr-with-progressive-wiring-m130","status":"publish","type":"product","link":"https:\/\/italytacticalshop.it\/en\/product\/retroarms-ngrs-spring-sicr-with-progressive-wiring-m130\/","title":{"rendered":"RetroArms NGRS Spring SiCr with Progressive Wiring \u2013 M130"},"content":{"rendered":"

RetroArms NGRS SiCr progressive spring M130<\/strong> is a shortened upgrade spring designed exclusively for Tokyo Marui Next Generation Recoil Shock (NGRS)<\/strong>. It is made from silicon-chromium (SiCr) alloy valve spring wire<\/strong>, has an outer diameter of 13.75 mm and features progressive winding for easier initial compression.<\/p>\n

Retro Arms Spring for Next Generation Recoil System (NGRS) Tokyo Marui Rifles<\/h5>\n

The spring is a fundamental part of the gearbox<\/strong> because its strength, along with the air seal, affects the overall performance<\/strong> of the rifle. Low-quality springs, although they often have above-average performance compared to their rated value, quickly lose their stiffness, shorten, or in extreme cases, can break (due to storing the rifle with a compressed spring or in a pre-cocked state).
From the workshop of Retro Arms<\/strong>, famous for their quality CNC gearboxes<\/strong>, comes another finely tuned upgrade part for Marui NGRS: a high-quality spring made from valve wire alloyed with silicon and chromium (SiCr)<\/strong> that retains its stiffness after thousands of shots and does not deform.
Progressive (variable) winding makes the compression easier in the first phase of the piston movement<\/strong> while not reducing the performance. The outer diameter of the spring is 13.75 mm.
<\/strong>The rated value of M120 corresponds to a speed of 120 m\/s<\/strong> with an average barrel length. With a good air seal<\/strong> Now longer barrel<\/strong>, the performance will be higher.<\/strong><\/p>\n

Installation<\/h5>\n

When installing a spring with progressive winding, the compressed part<\/strong> (where the coils are closer together) goes on the spring guide.<\/strong> Retro Arms marked this spot with color<\/strong> for easy identification of the spring strength (see below).<\/strong><\/p>\n

Compatibility<\/h5>\n

This spring is compatible only with TM Next-Generation Recoil<\/strong> gearboxes (referred to as gearbox v.9) and is not intended for other types of gearboxes.
In terms of length and diameter, it matches the springs of VFC Umarex MP7 AEG and LCT QM<\/strong>, but using them in these systems is at your own risk<\/strong> as the manufacturer specifies compatibility only with TM NGRS.<\/strong><\/span><\/p>\n

Retro Arms Spring Stiffness and Their Color Coding<\/h5>\n
    \n
  • M100 \u2013 yellow<\/span><\/li>\n
  • M110 \u2013 orange<\/span><\/li>\n
  • M120 \u2013 red<\/span><\/li>\n
  • M130 \u2013 purple<\/span><\/li>\n
  • M140 \u2013 blue<\/span><\/li>\n
  • M150 \u2013 green<\/span><\/li>\n
  • M190 \u2013 pink<\/span><\/li>\n<\/ul>\n
    Retro Arms AEG Spring Range<\/h5>\n
      \n
    • for AEG standards<\/strong> gearboxes<\/li>\n
    • for PSG\/SR25<\/strong> (extended gearboxes)<\/li>\n
    • for Marui NGRS<\/strong> (shortened springs for EBB rifles from Tokyo Marui)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      RetroArms NGRS SiCr progressive spring M130 is a shortened upgrade spring designed exclusively for Tokyo Marui Next Generation Recoil Shock (NGRS). It is made from silicon-chromium (SiCr) alloy valve spring wire, has an outer diameter of 13.75 mm and features progressive winding for easier initial compression. Retro Arms Spring for Next Generation Recoil System (NGRS) […]<\/p>\n","protected":false},"featured_media":105877,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[201],"product_cat":[35],"product_tag":[],"class_list":["post-105876","product","type-product","status-publish","has-post-thumbnail","product_brand-retroarms","product_cat-ricambi-e-interni-accessori-arma","first","outofstock","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/italytacticalshop.it\/en\/wp-json\/wp\/v2\/product\/105876","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/italytacticalshop.it\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/italytacticalshop.it\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/italytacticalshop.it\/en\/wp-json\/wp\/v2\/comments?post=105876"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/italytacticalshop.it\/en\/wp-json\/wp\/v2\/media\/105877"}],"wp:attachment":[{"href":"https:\/\/italytacticalshop.it\/en\/wp-json\/wp\/v2\/media?parent=105876"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/italytacticalshop.it\/en\/wp-json\/wp\/v2\/product_brand?post=105876"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/italytacticalshop.it\/en\/wp-json\/wp\/v2\/product_cat?post=105876"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/italytacticalshop.it\/en\/wp-json\/wp\/v2\/product_tag?post=105876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}