Howa 1500 Tactical Bolt Knob Conversions Why not set your rifle apart from the rest with one of our custom Howa tactical bolt knob conversions. Our bolt knobs are amongst the strongest and most stylish looking bolt knob conversions available on the market. Made from high quality alluminium and finished in a very durable annodised coating. Using our special bolt jig we turn down your existing bolt knob and then cut a 5/16 x 24 thread to which our tactical bolt knob just screws on to. There is no re-finishing needed of any kind. Price £80.00 A few pictures showing the Howa bolt knob threading service. The bolt is dialed in ready for machining The original knob is turned off The bolt is turned to final size for threading Bolt now screw cut to 5/16 X 24 The finished modified bolt The finished bolt  Howa Tactical Bolt Knob Conversion, extended custom bolt. Please give us a call to discuss your requirements bolt knob threading service. Howa 1500 Tactical bolt knob conversion. Howa 1500, Bedfordshire, Buckinghamshire, Hertfordshire, Northamptonshire, Milton Keynes, London, Dunstable, toddington, aylesbury, buckingham, leighton buzzard, Gunsmith services, gunsmithing. Markyate. Gunsmith Markyate. Broomhills gunsmiths. threading service.