Britannia or Tikka Picatinny Rail

[andy.k5]

Needing to buy a picatinny rail for my T1X 22LR and a quick google search brings up the standard Tikka version for around £40 and a Britannia equivalent for £75 ish

What advantage am I going get by spending an extra £35 on a Britannia one? . . . or am I not

 

[JTO]

Is that the longer and stiffer Brittannia rail?

 

[andy.k5]

The Britannia one is 137mm and made from T6 Aluminum. The Tikka one I have no idea on spec