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Please help me under stand the difference between the KDG MRX5-110 and the MRX5-120 Which have M-Lok at the 3-6-9 positions ect... — 1 Answer

by AJ, from AL, United States Asked on November 21, 2017

Name Kinetic Development Group Modular Receiver Extension, Compatible w/ all 7.62 & 5.56 SCAR Model (4.6)
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Answered by Armando R., Gear Expert, from IL, United States, on December 16, 2017

The difference is that the MRX5-110 uses a "industry standard" modular system whereas the MRX5-120 uses the Magpul M-Lok attachment system. If you are looking for the M-Lok rail is it MRX5-120.

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Last updated 2025-11-12 UTC.