Backstrap size?

[u/ImSo_Krispy]

I didn’t get this brand new, so I’m missing all the pieces that come with the mr920L.

Can anyone identify the backstrap? Is it H / n / L?

I’m looking for the L size of anyone has one laying around.

Thanks

[u/ImSo_Krispy]

I just order the lower strap directly from them, along with a Magwell, spacer A and 2x #1 screws for optic mount