SIZE SLOT：Recommended picatinny rail size for 21 build | HKPRO Forums

size slot   piston vario 125 oversize 50 I had an HK11A1 built similar receiver to a 21 and used a 15 slot rail. The only issue or annoyance I have had is that you can't mount optics all the way forward on the rail and still use the carry handle. If you don't have a carry handle or you don't care about using your carry handle, then the more rail the merrier

reverse 1999 full size App Store states that its only 2.2GB on mobile. at the release it'll be small but eventually it will get higher in size due to the content updates. Just one question. How much storage space do i need to run this game?

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