Brand new unused Luxfer 50mm diameter 280cc and 60mm diameter 400/500cc Aluminium flat bottomed Buddy Bottles fitted with a BEST Fittings fully rebuildable valve, configured for BSA guns.
Please note that if you are wanting to upgrade your 50mm diameter 200cc Buddy Bottle fitted to your BSA R10 or R10 Mk2 to a 400cc or 500cc bottle, you will require a minimum of 6mm clearance between the 50mm bottle and the barrel. It may not be possible if the gun is fitted with the shrouded barrel option as there may be insufficient clearance between the shroud and the new 60mm diameter bottle for this particular upgrade. If there is no shroud, then it is not a problem. Slight stock modification is almost always required to fit the 400cc or 500cc bottle to the R10 or R10 Mk2 rifles due to the larger diameter.
The 280cc bottle upgrade will fit all models, as it is 50mm diameter, the same as the 200cc original equipment bottle.
We supply these BSA configured Buddy Bottles with a spacer for the valve thread to give the set forward required to eliminate any significant modifications to the woodwork on a standard stock. However, as there are always anomalies we cannot guarantee that no further stock modification will be required.