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MK 12 Picture & Discussion Thread
- Thread starter OzzyO20
- Start date
While not 100% clone correct, this is my Mk12 Mod 0-ish clone.
It is BY FAR my favorite platform in the AR world. Shoots regular ball ammo extreeeemely well while being able to get my Mk12 itch.
Setup:
Anchor Harvey M4 Upper
FN CHF/CL 18" Rifle Gas 1:8 .223 Wylde Chamber with Mk12 brake
ToolCraft NIB BCG
PRI Gen 3 Mk12 Tube with Full 1913 rail
PRI Folding Mk12 FSB
ARMS Wingless #40 Rear
PSA Ambi CH
POF Ambi Selector
KAC Legacy 2-Stage NSN Trigger
Harris Bipod
KAC VFG
Bushnell Nitro 3-12X44 with Deploy MIL (solid scope with a very usable reticle)
My very own krylon paint job.
Group with Monarch Brass .223:
It is BY FAR my favorite platform in the AR world. Shoots regular ball ammo extreeeemely well while being able to get my Mk12 itch.
Setup:
Anchor Harvey M4 Upper
FN CHF/CL 18" Rifle Gas 1:8 .223 Wylde Chamber with Mk12 brake
ToolCraft NIB BCG
PRI Gen 3 Mk12 Tube with Full 1913 rail
PRI Folding Mk12 FSB
ARMS Wingless #40 Rear
PSA Ambi CH
POF Ambi Selector
KAC Legacy 2-Stage NSN Trigger
Harris Bipod
KAC VFG
Bushnell Nitro 3-12X44 with Deploy MIL (solid scope with a very usable reticle)
My very own krylon paint job.
Group with Monarch Brass .223:
So my local rifle league night (PRS) wants to start doing theme night shoots. So next weeks will be Gas guns. Sooo I decided to take my mk12, rip the crappy scope I had on it and put my old K624I on it, and mounted my AAC cyclone on the end. This should be a fun shoot.
That’s right on the money velocity. Better than the Black Hills that’s gone through mine with regards to ES and SD.
Nice, what all did use for relaoding components?
Powder, charge weight, primer and smk vs tmk?
Thanks and good results
Remember folks, my load info might not work for you. I took a look at the mk262 videos from Johnys Reloading on YouTube. He was doing 23.2g and getting nasty pressure signs. Mine was not having that issue so I bumped it up a tenth of a grain, and the juice was worth the squeeze.
Lake City brass trimmed to minimum length, CCI 41 primers, 23.3g of AR Comp (compressed load) sitting under a 77g SMK w/cantelure and slight crimp. OAL is 2.246.
A lot of people would get their feelings hurt to know I’m using a bootleg BCG that’s adjustable for suppressor use. I swear that has something to do with how less beat up my brass comes out.
Lake City brass trimmed to minimum length, CCI 41 primers, 23.3g of AR Comp (compressed load) sitting under a 77g SMK w/cantelure and slight crimp. OAL is 2.246.
A lot of people would get their feelings hurt to know I’m using a bootleg BCG that’s adjustable for suppressor use. I swear that has something to do with how less beat up my brass comes out.
Not entirely clone correct, I put a cheap scope on top because I was dying to shoot it....I was getting MOA at 100 yds with the WOA barrel, I think it will do better as it breaks in.
I built a MK 12 Mod 0 got it completed in 2011.
since I have upgraded the bolt to Sharps Reliable Bolt and put a Roller Cam Kit on the Carrier I replaced the Buffer Spring with a Braided 3 Wire Buffer Spring and replaced the A2 Buffer with a Hydraulic Kynshot Buffer.
everything else is spec. Sure is a good rifle.
since I have upgraded the bolt to Sharps Reliable Bolt and put a Roller Cam Kit on the Carrier I replaced the Buffer Spring with a Braided 3 Wire Buffer Spring and replaced the A2 Buffer with a Hydraulic Kynshot Buffer.
everything else is spec. Sure is a good rifle.
If anyone is looking for an ARMS #40 rear sight, I have a like new one I am replacing with the #40 L.
Oh No my TS 30 has been on mod 0 for 10 years now I would like to have a clip on PVS 22 and Allen Can
Took my Grandson out to the range today. He shot the LMT MK12ish out too 200 yards. I took a video of the 2 shots but didn't think to take a video of him before the shot. No I wasn't a cheap ass only only gave him 2 rounds to shoot it was just his final 2 shots. Always a great time taking him to the range.
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This is an absolutely beautiful build! I love the paint especially. I've got a few receiver sets from Precision Reflex and plan to build one similar to the Mk12 Mod 0, but with a match barrel.
Do you have any other projects going on?
Thanks, but it's not anything special. Nothing except the PRI rail and barrel/sight block/trigger are clone correct. Receiver is a NP3 set from Spikes, Geissele HSNM DMR trigger, Barrel is a Rainier Match SPR profile 1:8 that has been bedded, and scope is a cheap Athlon 3-15x something or other. I used to run a bog standard phosphate BCG but it has a JP FMOS group in it now. It shoots my 262 clone loads right under .75 MOA and gets out to 700 pretty easy unless there is even a tiny bit of wind
I Cerakoted everything in Troy Coyote. I regret painting it, should have left it black. Also I failed to get the AEM-5 can while they were still in stock, and I was told that Allen is retiring and won't be making any more. I want to build a Mod 1, but I'll be using a CLE Krieger barrel for it.FWIW - I posted up a factory sealed A.R.M.S #38 PEQ2-3 on GB just now without a reserve. I was trying to offer it up to people saying "make me an offer or a trade" but I got ran through the cheese grader because I didn't care about the price and everyone wanted a fixed price (which I can kind of understand). Hope this helps anyone looking for a clone correct legit rail for their Mk12 Mod 0 builds.
Aem5 has been order since may..haven’t even gotten the serial number yet. Thinking about going with ocm5.
My MK12 Mod 1 built by Kevin at HCS.
Had a terrible time trying to resource the correct rail and got impatient waiting so I said screw it. Turns out I really enjoy the URX 4 they put on.
Had a terrible time trying to resource the correct rail and got impatient waiting so I said screw it. Turns out I really enjoy the URX 4 they put on.
Attachments
Rainier's Shilen 1:8" ratchet-rifled, Wylde-chambered barrel or Superlative gas block aren't clone correct, but neither is the NP-R2 reticle in the 2.5-10x24, but it still works like a champ. That's an actual Ops Inc 12th Model can (ca. 2011) also. 75gr HPBT over 23.5gr 8208XBR or 77SMK over 23.5gr TAC in LC00 brass gives me 2750.
We're getting there..... just need delivery of ARMS 22m rings, the proper Leupy TS-30, and that damn AEM5 to get out of jail. Got the actual "correct" Geissele ( 
) in there too.
This will be my 1 clone build, because.
) in there too. This will be my 1 clone build, because.
Well, I told myself I'd never do a MK12 clone....but after Shark Arms had PEQ-3s for sale I just ordered a PRI Mod 0 upper from MidwayUSA and have started looking at Apex for the A1 stock and bits. I think I have a properly filled cart at Apex, but would welcome a sanity check as I've never been a fixed stock guy and this will be my first lower build as one.
Stock
Receiver Extension
Upper Buttplate Screw
Buffer
I'm thinking I'll snag a Colt or no name mil-spec LPK without FCG and do a Geissele SSA.
What's the best clone receiver available now? I have an 80% lower I could finish and have engraved by someone, but have never done that and have no idea who would take on an 80% lower, either finished or still in uncompleted form, and end up with a clone correct finished receiver.
So, help me spend my money. Does the Apex cart look good for the stock and associated bits? Is there a clone correct receiver that's available or is an 80%, either finished by me or an FFL, the way to go?
I blame all of you guys who've posted your gorgeous builds over the years here and elsewhere for this rash decision making
Stock
Receiver Extension
Upper Buttplate Screw
Buffer
I'm thinking I'll snag a Colt or no name mil-spec LPK without FCG and do a Geissele SSA.
What's the best clone receiver available now? I have an 80% lower I could finish and have engraved by someone, but have never done that and have no idea who would take on an 80% lower, either finished or still in uncompleted form, and end up with a clone correct finished receiver.
So, help me spend my money. Does the Apex cart look good for the stock and associated bits? Is there a clone correct receiver that's available or is an 80%, either finished by me or an FFL, the way to go?
I blame all of you guys who've posted your gorgeous builds over the years here and elsewhere for this rash decision making
Unless they are a1 profile 80% lowers, I wouldn't bother using one for a mk12. I'd just use whatever lower you have readily available until JJE/PSA releases the H&R M16a1 lowers later this year.Well, I told myself I'd never do a MK12 clone....but after Shark Arms had PEQ-3s for sale I just ordered a PRI Mod 0 upper from MidwayUSA and have started looking at Apex for the A1 stock and bits. I think I have a properly filled cart at Apex, but would welcome a sanity check as I've never been a fixed stock guy and this will be my first lower build as one.
Stock
Receiver Extension
Upper Buttplate Screw
Buffer
I'm thinking I'll snag a Colt or no name mil-spec LPK without FCG and do a Geissele SSA.
What's the best clone receiver available now? I have some 80% lowers I could finish and have engraved by someone, but have never done that and have no idea who would take on an 80% lower, either finished or still in uncompleted form, and end up with a clone correct finished receiver.
So, help me spend my money. Does the Apex cart look good for the stock and associated bits? Is there a clone correct receiver that's available or is an 80%, either finished by me or an FFL, the way to go?
I blame all of you guys who've posted your gorgeous builds over the years here and elsewhere for this rash decision making
Thanks. That makes sense.
I'll probably just look to pick up another rando lower with as little extra shit engraved on it as possible and roll with it.
Oh, and a total shot in the dark....but does anybody have an AEM-5 in stock? Looked high and low and all the normal online places are OOS as I expected.
I'd even get silly and buy one second hand from someone getting out of the game.
I'd even get silly and buy one second hand from someone getting out of the game.
I think most guys are going to the ocm5 now days.
I’ve only handled my OCM5 when it showed up at my dealer. I was impressed with the craftsmanship and how light it was. Really looking forward to shooting with it when the form 4 clears in 2056 AD.
I was able to meet my SOT and shoot my OCM5 a week ago. The dealer that I had my AEM5 on order through stated they just received the last batch of AEM5-30 cans and that the orders were from two years ago. I have no regrets canceling my AEM5 after 7 months.
find an OCM5 in stock and get the paperwork/efile started so you can receive it before you retire.
