Try this?
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Exported from Ver: 1.7.6.0 of the CoH_CoV Character Builder - (http://sherksilver.coldfront.net/index.php)
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Name:
Level: 50
Archetype: Mastermind
Primary: Thugs
Secondary: Dark Miasma
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01) --> Call Thugs==> Acc(1) Dmg(3) Dmg(3) Dmg(11)
01) --> Twilight Grasp==> Acc(1) Heal(7) Heal(7) Rechg(29) Heal(40)
02) --> Tar Patch==> Rechg(2) Rechg(33) Rechg(48)
04) --> Darkest Night==> TH_DeBuf(4) TH_DeBuf(5) TH_DeBuf(5) EndRdx(11) EndRdx(34) EndRdx(45)
06) --> Equip Thugs==> Rechg(6)
08) --> Pistols==> Acc(8) Dmg(9) Dmg(9) Dmg(31) EndRdx(46)
10) --> Combat Jumping==> Empty(10)
12) --> Call Enforcer==> Acc(12) DefBuf(13) DefBuf(13) Dmg(15) Dmg(15) Dmg(37)
14) --> Super Jump==> Empty(14)
16) --> Dual Wield==> Acc(16) Dmg(17) Dmg(17) Dmg(25) Rechg(43) EndRdx(46)
18) --> Gang War==> Rechg(18) Rechg(19) Rechg(19)
20) --> Fearsome Stare==> Acc(20) Fear(21) Rechg(21) Rechg(33) TH_DeBuf(34) TH_DeBuf(34)
22) --> Empty Clips==> Acc(22) Dmg(23) Dmg(23) Dmg(25) Rechg(37) EndRdx(43)
24) --> Hurdle==> Empty(24)
26) --> Call Bruiser==> Acc(26) Dmg(27) Dmg(27) Dmg(29)
28) --> Swift==> Empty(28)
30) --> Stamina==> EndMod(30) EndMod(31) EndMod(31)
32) --> Upgrade Equipment==> Rechg(32) Rechg(33)
35) --> Shadow Fall==> DmgRes(35) DmgRes(36) DmgRes(36) EndRdx(36) EndRdx(37) EndRdx(43)
38) --> Dark Servant==> Acc(38) Rechg(39) Rechg(39) Rechg(39) TH_DeBuf(40) TH_DeBuf(40)
41) --> Scorpion Shield==> DefBuf(41) DefBuf(42) DefBuf(42) EndRdx(42) EndRdx(46)
44) --> Assault==> EndRdx(44) EndRdx(45) EndRdx(45)
47) --> Hasten==> Rechg(47) Rechg(48) Rechg(48)
49) --> Petrifying Gaze==> Acc(49) Hold(50) Rechg(50) Hold(50)
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01) --> Power Slide==> Empty(1)
01) --> Sprint==> Empty(1)
01) --> Brawl==> Empty(1)
01) --> Supremacy==> Empty(1)
02) --> Rest==> Empty(2)
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Not sure, but looks OK
If its for a concept, just get dual wield and use it to bring out the pistols when you need em. You will have alot more use of other powers and you need the slots as well.
Or course, everyone gotta play the way it makes sense for themselfs so dont let me put you off doing it.
In the above build I would slot your henchies more, 6 slots for each of em. They are your main source of DPS and need to be taken care of with love. I run my MM with 2-3 acc, 3 dmg and 1 endred.
Not getting stamina until 30 will leave you unable to use much of the attacks you have until then if you use Darkest Night and Shadow Fall. Maybe put off pistols and gang war and you get stamina at 24 instead, pistol is the weakest attack and gang war has a very situational use.
Hmm I didn't realy think of just taking one Pistol attack, as i'm only realy going for a concept look, so I suppose I could do that, cheers for the advice all. 
Hey all, been looking round our forums and the US forums, can't realy find a decent Thugs/Drak MM build that incorparats all 3 off the attacks.
So just wondering if you MM experts out there could come up with a build for me please, any advice given is greatly appreciated. Thanks Sayia.