Jaeger Precision reviews the RGW M-Lok rail set for the Guns Modify Scar-L MWS GBBR, detailing its installation, which includes a lower piece and M-Lok panels, but highlights significant drawbacks such as fitment and color matching issues, and critically, the incompatibility of standard M-Lok accessories on the side rails; despite improving handling comfort, the rail kit's functionality is ultimately deemed poor due to these machining and compatibility problems.

Jaeger Precision says that the RGW RBS SQD Compact Tri Lug Dummy Silencer is a good one to use. This is a 6.4" long, 1.8" diameter black aluminum replica designed to enhance the aesthetic appeal of airsoft guns. It weighs 400g and is compatible with VFC MP5/MP5K GBB, Maruyama SCW-9, RGW MPX 3 lug barrel, and Marui Next Gen MP5 (though modifications may be necessary for installation). This tracer-ready silencer can accommodate 5KU BBP Tracer Modules.

More options for airsoft players when looking for a tracer unit a muzzle flash generator for a more realistic firing. In this video JK Army show the RGW SF Threaded Warden Tracer Unit with Flame Effect that is available at their online store and this fits 14mm CCW threads. Price is US$50.70, shipping costs not included.