Please note that these modifications are not available separately except where noted with an asterisk (*).


No. B200 Oversize Cylinder Base Pin
with lock hardened ground base pin and a knurled head for ease of removal. Features a headed lock screw which engages a small recessed machined into the barrel and completely eliminates base pin movement under severe recoil.

B200 $65.00
B201 (Belt Mountain factory pattern oversize base pin) $50.00

No. B210 Set Headspace and Cylinder Endfloat Headspace is checked and set as required, with endfloat set tight as possible consistent with receiver condition and free rotation. Please note that the barrel-to-cylinder gap may have to be set if it exceeds .006-.008 once endfloat is set. Note also that this procedure describes a cylinder installation.

B210 $50.00

No. B220 Regulate Barrel-to-cylinder Gap Set at .003-.004 or as indicated. Includes refitting the ejector housing and recutting the forcing cone. Excess cylinder endfloat, if not corrected, may require a longer gap. In some cases, the cylinder must be faced square to maintain a consistent gap. Please note that this procedure also describes a barrel installation.

B220 $95.00

* No. B230 Hone/ream Cylinder Necks and Throats Undersize throats and chamber necks (where indicated) are adjusted to the proper diameter to improve accuracy and minimize leading.

B230 $75.00

No. B240 Pin-in Front Sight Conversion The simplest way to increase the height of the front sight, change the style of the blade or to install a black blade on a chrome plated revolver. The old blade is removed and a pocket milled into the remaining base. A new blade is fabricated and secured to the base with a hardened roll pin. Please specify standard ramp, Baughman ramp or patridge
style blade.

B240 $125.00
B241 (extra fitted blade for B240) $45.00

No. B250 Sight Regulation Anytime barrels are removed or installed or front sights are modified or installed, the gun should be test-fired to verify windage and elevation, even on adjustable sight guns. Customers should provide their own ammo for best results. Specify no. B251 if both windage and elevation are to be set on fixed-sight guns.

B250 (windage only) $65.00
B251 (windage and elevation) $95.00

No. B260 Serrate Vaquero Front Sight Rear face of the blade is serrated 80 l.p.i. to reduce glare and dramatically improve sight picture. Blade shape is preserved. Available for both blue and stainless. Cold blue touch up on moly parts.

B260 $25.00

No. B300 Shorten Factory Barrel Cut to all standard lengths. The factory sight is remounted using silver solder for absolute reliability. Lettering is removed only where it is cut through or badly eccentric relative to the ends. The crown is detailed and the barrel reblued. For 4" lengths, please use no. B301 which also includes cutting and refitting the ejector tube, spring and base pin.

B300 $175.00
B301 4" lengths (includes tube, rod, and base pin work) $250.00

No. B310 Custom Front Sight When barrels are shortened or custom made, an elegant machined front sight is substituted for the factory sight. Ramp pattern blade is standard; Baughman and patridge also available by request. Applicable to cat. nos. B300 and B301.

B310 (add to nos. 300, 301) $50.00

No. B311 Express Front Sight Small, tidy, hand-shaped express style base. Removable blades are retained by an attractive cross screw designed for maximum recoil resistance and reliability. Includes one fitted Baughman ramp blade. Applicable to nos. B300, 301 and B320.

B311 (add to nos. 300, 301, 320) $225.00
B312 Extra fitted blade for no. 311 (specify shape/height) $55.00

* No. B320 Fabricate/fit Custom Round Barrel Made from premium quality barrel stock and supplied in a variety of calibers. Standard features include an 11 degree forcing cone, factory style crown, barrel-to-cylinder gap of .003-.004, custom front sight (no. B310) and rebluing. Please note: in some cases, cylinder endfloat may require adjustment prior to rebarreling. please specify the following: contour: factory or untapered length: up to 7 1/2 inches blade shape: ramp, Baughman ramp or patridge. Options: lengths over 7 1/2 inches, stainless material available in most calibers, target length ejector housing/rod installed (stainless steel as available), recol proof ejector housing installation. Consists of recoil key, tube hold down widget, custom screw and related machine work. Recommended for heavy magnum revolvers.

B320 $459.00
B321 lengths over 7 1/2" on no. B320 add $20.00
B322 use stainless material on no. B320 (inc. pin-in front sight) add $160.00
B323 target length steel ejector housing on no. B320 add $125.00
B324 Recol proof ejector housing installation on no. B320 add $75.00

No. B400 Provide/install Steel Grip Frame Steel parts offer increased weight, improved fit and finish quality. Please specify Blackhawk or Super Blackhawk. Includes receiver reblue. Available only for New Model guns.

B400 $225.00
B401 Provide/install steel OM grip, frame and trigger $265.00

No. B401 Provide/install Steel Old Model Blackhawk Grip Frame The XR3-RED pattern part will fit all Old Model revolvers including the Flat-top and Single-Six guns. Includes the necessary wide trigger, fitting and receiver reblue.

B401 $265.00

No. B410 Bisley Parts Conversion Bisley model grip frame, hammer and trigger are provided and fitted to standard New Model guns. Includes reblue of gun. Stainless guns brushed finish only. No. B411 (*) ‘Bisquero’ conversion of the Vaquero model includes recoloring the receiver, loading gate and hammer.

B410 (blue or stainless) $395.00
B411 ‘Bisquero’ conversion $650.00

No. B420 Provide/install Steel Ejector Housing Replaces the factory aluminum part with a high quality steel part for superior fit and finish. Please note: due to variations in factory guns, extra fitting may be required which will incur a modest charge.

B420 from $65.00
B421 target length tube installed (on existing bbl.) $175.00

* No. B430 Colt Black Powder Style Cylinder Chamfer The graceful, pre-war style flared bevel is applied to fluted cylinders. Includes rebluing where necessary.

B430 $60.00

No. B440 Bisley Hammer Installation Bisley hammer is fitted and recontoured to fit new model Single-Six, Blackhawk and Super Blackhawk models for a handsome and handy lowered hammer spur.

B440 $95.00

No. B450 Color Case Hardening A beautiful, traditional finish for revolver receivers and loading gates. Also applicable to hammers and, in some cases, triggers.

B450 $250.00
B451 color hammer with above add $25.00