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Sponsor News TNVC's Labor Day Sale still ongoing - Site Wide Savings - Don't miss out!
6/20/2026 6:43:48 PM EDT
I am starting to see a lot of Heckler & Koch MR762 A4 uppers for sale.  Are these compatible with anything other than an HK 417/MR762 lower?  Surely these aren't made just to fit a 13" SBR MR762?

TIA,
Sid
6/21/2026 12:33:27 PM EDT
[#1]
The MR762A4 complete upper will only fit on an MR762A1 or MR762A4 lower.
6/21/2026 5:09:00 PM EDT
[#2]
Thanks!

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