We've updated our designs of the Arca+Pic, the SRS 4" arca, and the Arca Mini! After making these for nearly 4 years we decided we could take some time to make improvements!
The arca is now thinner and protrudes less from the stock. The Arca+Pic now accommodates bolt spacing up to 3.5", and has an integrated QD cup, and we still retained the sling stud hole as well.
All three of these rails have the rounded bottom cut in the center so they mount solid to a rounded bottom stock, and also a flat bottom stock or chassis.
-Ken
The arca is now thinner and protrudes less from the stock. The Arca+Pic now accommodates bolt spacing up to 3.5", and has an integrated QD cup, and we still retained the sling stud hole as well.
All three of these rails have the rounded bottom cut in the center so they mount solid to a rounded bottom stock, and also a flat bottom stock or chassis.
-Ken