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  1. What's the rules on owning/buying an M203 or the like? > …

    Aug 12, 2008 · LMT M203 receivers transfer just like a regular firearm ? then you can buy a 37 mm barrel ? that would look neat for a M4 replica. much nicer than a spike one. where can I …

  2. Colt M203 37mm Grenade Launchers - IN STOCK! - AR15.COM

    Jul 1, 2017 · COLT M203 37MM LAUNCHERS! Available with 9[ARCHIVED THREAD] - Colt M203 37mm Grenade Launchers - IN STOCK! (Page 1 of 17)

  3. Which AR rails are you using for your M203? - AR15.COM

    Sep 1, 2017 · I've used mine on a DD MK18 RIS II without issues. Granted, not a lot of rounds as they are scarce, but it seemed to hold up fine. Also had it on a KAC URX II Medium for a …

  4. Use of M203/Suppressor combo on 80s/90s CAR-15s > AR-15 / M …

    Apr 10, 2016 · Hello everyone, I'm new here and am somewhat of a novice on firearms, so please forgive my ignorance. So a buddy and I have been debating whether you could use a ring …

  5. what rail system will work with rail mount M203? - AR15.COM

    Apr 19, 2019 · 4. Once M203 grenade launcher is seated properly, align M203 hanger tabs with the forward-threaded holes on the M203 and install two lower rail attachment screws through …

  6. GL/SSC build is finally complete! > AR Discussions > AR15.COM

    Jan 4, 2025 · I just acquired the final piece for my GL/SSC build, an actual Colt M203 40mm grenade launcher! This is a factory original Colt M203 40mm, not a converted 37mm.

  7. Value of NOS Cobray 37mm M203 "Flare" Launcher? - AR15.COM

    Dec 3, 2022 · The launcher is a NOS Cobray 37mm M203 "Flare" launcher complete with original box, bore brush, all mounting hardware and instructions. Also has a NOS USGI M203 heat …

  8. M203 sights - no front sight post and no rail space - AR15.COM

    Oct 9, 2023 · What is everyone using for sights on rail mount M203 (not barrel mount)? I don't have a front sight post and definitely don't have space on top rail for leaf sight and buis.I know …

  9. Do I need a special barrel for mounting an M203? - AR15.COM

    Sep 15, 2014 · I recently purchased an M203 and I'm looking to build an A2 correct upper for my M16. My question revolves around the barrel. I'm wanting to do an A2, so I need the heavy …

  10. M203 MK18 setup? > AR Discussions > AR15.COM

    Sep 25, 2015 · I have a rail mounted 9" M203 that I planned to mount onto a MR556. However, I'm thinking to build a rifle dedicated for the M203, particularly a clone of some sort in use by …