sfcrangerdoc Posted January 31, 2022 Share Posted January 31, 2022 (edited) Hi All, I've got a very nice HK Marked M1S90 Tactical that I'd like to modernize ever so slightly with a scalarworks low profile RDS mount that will cowitness with the ghost ring irons. However the M1S90 is not drilled/tapped for mounts whereas the M2 is. Was wondering if there was a hole template out there for drilling in the factory locations? I believe the m1 and m2 receivers are identical, so there should be no issue drilling it, just want to be sure they're in the right spots. Pic for attention. (Pictured is an M2 but my M1 is setup exactly like it minus the RDS) Edited January 31, 2022 by sfcrangerdoc Quote Link to comment Share on other sites More sharing options...
Steve Rose Posted January 31, 2022 Share Posted January 31, 2022 This EGW base details the hole spacing Quote Link to comment Share on other sites More sharing options...
sfcrangerdoc Posted February 1, 2022 Author Share Posted February 1, 2022 22 hours ago, Steve Rose said: This EGW base details the hole spacing OH that is good to know...thank you! Quote Link to comment Share on other sites More sharing options...
bambihunter Posted February 1, 2022 Share Posted February 1, 2022 Just a thought. If you don't have sentimental attachments to the M1, you might consider selling it as it is. Many people, myself included, look specifically for unmodified/unmolested HK import models. The M2 is already ready to go with many of these, and have more aftermarket support. You might come out ahead, or at least break even to sell this one and buy the M2. Then, you can let your M2 mods go crazy and likely not harm the value at all, likely increasing it instead. That is just my opinion, I am sure some others disagree. Quote Link to comment Share on other sites More sharing options...
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