Miroku
MK70
A Miroku over-and-under with interchangeable chokes, in Sporter and Hunter configurations
MK70 Sporter / MK70 HunterMK-70 Quail Special 20g/28g Combo · Other
Overview
The MK70 is Miroku’s over-and-under in Sporter and Hunter configurations.1, 2 The Sporter has interchangeable chokes to suit a range of clay targets.3 Current Sporters have a pistol stock, a tulip fore-end and a grey nitrided steel action.4, 5
The MK70’s boxlock action has a bolt that runs along the action floor.6 The barrel selector for the single selective trigger sits in the safety thumbpiece.6 The current Grade 1 has flush Invector Plus tubes, and the Grade 5+ extended ones.7, 8
Both current Sporters have 39 mm of drop at the comb and 63 mm at the heel.4, 9 The Grade 1 has American Grade 2/3 wood with a satin varnish, and the Grade 5+ American Grade 5/6 wood with an oil finish.4, 9
Specifications
12-bore · sporting
| Locking | Bolt running along the action floor6 |
|---|---|
| Lockwork | Boxlock6 |
| Trigger | Single selective trigger; barrel selector in the safety thumbpiece6 |
| Introduced | c. 199510, 11 |
| Bore | 12-bore |
| Chambers | 76 mm (3 in) |
| Barrels | 30 in |
| Chokes | Invector Plus; removable; 3 tubes |
| Weight | 3.45 kg (7 lb 10 oz; catalogue, 30 in) |
Specifications
| Configuration | Bore | Chambers | Barrels, in | Rib, mm | Fore-end | Grade | Choke system | Years | Weight | Markets | Stock | Finish |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Quail Special barrel set16, 17 | 20-bore | 76 mm (3 in) | 30 | 6.2 | Quail Special barrel set | Invector Plus; removable; 3 tubes | 2018 | Other | 375 mm pull | wood grade 5 | ||
| Quail Special barrel set16, 17 | 28-bore | 70 mm (2¾ in) | 28 | 6.2 | Quail Special barrel set | Invector; removable; 3 tubes | 2018 | Other | 375 mm pull | wood grade 5 | ||
| Sporting | ||||||||||||
| Sporting7, 4, 5 | 12-bore | 76 mm (3 in) | 30 | 10 | tulip | Grade 1 | Invector Plus; removable; 3 tubes | 3.45 kg (7 lb 10 oz; catalogue, 30 in) | pistol grip; tulip fore-end | grey nitrided steel action; scroll engraving; wood grade 2/3 | ||
| Sporting8, 9, 12 | 12-bore | 76 mm (3 in) | 30 | 10 | tulip | Grade 5+ | Invector Plus; removable; 3 tubes | 3.5 kg (7 lb 11 oz; catalogue, 30 in) | pistol grip; tulip fore-end | grey nitrided steel action; hand-finished scroll engraving; wood grade 5/6 | ||
| Sporting14 | 12-bore | 76 mm (3 in) | 27.95, 29.92 | 10 | Sporter Grade 1 | Invector Plus; removable | ||||||
| Sporting14 | 12-bore | 76 mm (3 in) | 27.95, 29.92 | 10 | Sporter Grade 5 | Invector; removable | ||||||
| Sporting1, 18, 19 | 12-bore | 76 mm (3 in) | 30 | 10 | Sporter test gun | Invector Plus; removable; 3 tubes | ||||||
| Game | ||||||||||||
| Game14 | 12-bore | 76 mm (3 in) | 27.95, 29.92 | 6 | Hunter Grade 6 | Invector Plus; removable | ||||||
| Game2 | 20-bore | 76 mm (3 in) | 27.95, 29.92 | 6 | Hunter Grade 1 | Invector; removable | ||||||
| Game2 | 28-bore | 70 mm (2¾ in) | 29.92 | 6 | Hunter Grade 1 | Invector; removable | 2.8 kg (6 lb 3 oz; catalogue, 29.92 in) | |||||
Scroll for more columns.
Identify and date
The serial number is on the action frame under the top lever.20 A mark on the barrel shows whether it has fixed chokes or takes Invector or Invector Plus tubes.15 Notches on each tube show its constriction.15 Gun Mart’s Sporter test gun has 18.7 mm bore marks and a Belgian fleur-de-lys steel-shot proof mark.18
Two letters after the MK70 serial number give the year of manufacture.21 Each letter stands for a digit: Z=1, Y=2, X=3, W=4, V=5, T=6, R=7, P=8, N=9 and M=0.21 NT, for example, means 1996.21
| Where | Markings |
|---|---|
| action frame under the top lever | Serial number20 |
| Barrel | Choke-system marking: fixed, Invector or Invector Plus15 |
| choke tube | Notches identifying constriction15 |
| Barrels of the Gun Mart Sporter test gun | 18.7 mm bore marks and Belgian fleur-de-lys steel-shot proof18 |
Before you buy
- On an older MK70, inspect the firing-pin tips for cratering.22
- Read the barrel’s choke-system mark before ordering tubes; Invector and Invector Plus tubes do not interchange.15
- Match each Quail Special barrel set to its own tubes: the 20-bore takes Invector Plus and the 28-bore Invector.17
- Check the chamber length on each barrel set: the 28-bore Hunter in the earlier catalogue has 70 mm chambers, and the current 12-bore Sporter 76 mm.2, 7
- Unload the gun before handling the chokes, and check that the tubes are tight.23, 24

History
The MK70 replaced the Miroku 7000 in the mid-1990s.10, 25 Like the MK60, the MK70 descends from the lighter 600 and 700 models by way of the 6000 and 7000.26 The MK38 comes instead from the 800 and 3800 trap and skeet line.26
The 2018 Quail Special combined 20- and 28-bore barrels for Australia and New Zealand.16 The run numbered 60 guns.16 Each came with 30-inch 20-bore barrels, 28-inch 28-bore barrels and three tubes for each set.17
Sources
- Miroku MK70 Sporter test with back-bored barrels, technical-data. Gun Mart / Michael Yardley. magazine · Archive
- Miroku Hunting & Shooting legacy catalogue: model tables, mk70-small-bores. Browning International. maker catalogue · Archive
- MK70 Sporter Grade 1 12M, model-and-purpose. Miroku / Browning International. maker website · Archive
- MK70 SPORTER GRADE 1 12M, stock. Miroku / Browning International. maker website · Archive
- MK70 SPORTER GRADE 1 12M, weight-and-finish. Miroku / Browning International. maker website · Archive
- Second-hand Miroku MK70 shotgun review, technical-specification. ShootingUK / Mike George, 2011-12-05. magazine · Archive
- MK70 SPORTER GRADE 1 12M, barrels-and-chokes. Miroku / Browning International. maker website · Archive
- MK70 SPORTER GRADE 5+ 12M, barrels-and-chokes. Miroku / Browning International. maker website · Archive
- MK70 SPORTER GRADE 5+ 12M, stock. Miroku / Browning International. maker website · Archive
- How old is my Miroku MK70 shotgun?, introduction. Shooting Times / ShootingUK, 2010-03-19. magazine · Archive
- MK70 SPORTER GRADE 1 12M, model. Miroku / Browning International. maker website · Archive
- MK70 SPORTER GRADE 5+ 12M, weight-and-finish. Miroku / Browning International. maker website · Archive
- Miroku Hunting & Shooting legacy catalogue: model tables, mk38-trap. Browning International. maker catalogue · Archive
- Miroku Hunting & Shooting legacy catalogue: model tables, mk70-twelve-bore. Browning International. maker catalogue · Archive
- Miroku MK manual: identification and choke checks, choke-systems. Miroku / Browning. manual · Archive
- Miroku MK70 Quail Special distributor advertisement, edition. Outdoor Sporting Agencies / Sporting Clays Australia, 2020-04. maker catalogue · Archive
- Miroku MK70 Quail Special distributor advertisement, specifications. Outdoor Sporting Agencies / Sporting Clays Australia, 2020-04. maker catalogue · Archive
- Miroku MK70 Sporter test with back-bored barrels, barrel-details. Gun Mart / Michael Yardley. magazine · Archive
- Miroku MK70 Sporter test with back-bored barrels, update-date. Gun Mart / Michael Yardley. magazine · Archive
- Miroku MK manual: identification and choke checks, serial-number. Miroku / Browning. manual · Archive
- How old is my Miroku MK70 shotgun?, serial-date-code. Shooting Times / ShootingUK, 2010-03-19. magazine · Archive
- Second-hand Miroku MK70 shotgun review, firing-pins. ShootingUK / Mike George, 2011-12-05. magazine · Archive
- Miroku MK manual: identification and choke checks, unloaded. Miroku / Browning. manual · Archive
- Miroku MK manual: identification and choke checks, tightness. Miroku / Browning. manual · Archive
- Second-hand Miroku MK70 shotgun review, predecessor. ShootingUK / Mike George, 2011-12-05. magazine · Archive
- Miroku MK38 Sporter review, family-history. The Field, 2023-08-16. magazine · Archive