Precision gas gun, Form?

[NSI]

My (kitchen table gunsmithed, aborted) lovechild of a mk 12 mod 0 and RD-15 LPR produced a 1.3" group with 77 AAC OTM today. Unfortunately it's currently a semi-semi-automatic since I am an idiot at adjustable gas blocks.

Here's the cheapo BA barrel in it: https://www.ballisticadvantage.com/...rifle-length-ar-15-barrel-premium-series.html

Here's the abomination itself:





-J

 

[ID_Matt]

I am clueless when it comes to gas guns but with the help of a friend I have slowly put a cheap build together and am pretty happy with how it turned out. Shoots better than I imagined. Started it's life as an inexpensive 16" Radical, slowly added:

rave trigger
Aero adjustable gas block
vertical grip - no idea on brand
51Fifty arca handguard
Magpul DT stock (prs lite did not balance well)

The first thing I planned to do when I started modifying was to swap the barrel, but it shoots so well that I don't think I have a reason to change it.

Shoots the cheap AAC 75 grain ammo fairly consistently under 1.5 MOA.



1 Low, adjusted, shot 7 - 115 yards.

 

[Imcolej]

@Formidilosus, Putting in my request for a Shoot2Hunt Academy gas gun course! I'll will be ready soon once my Brownells PRI upper order comes in. That deal was too hard to pass up.

 

[NSI]

@Formidilosus, Putting in my request for a Shoot2Hunt Academy gas gun course! I'll will be ready soon once my Brownells PRI upper order comes in. That deal was too hard to pass up.

Second hand jealousy.

If this does come together, I can host at WWRA (south of Afton). Multiple tactical bays plus steel out to 1k and space to camp.

-J

 

[Imcolej]

I'm in love bros. This is a 30 round group with AAC TMK's.

Never ran an A2 stock so that is kind of a new experience. Also working with a heavy mil-spec trigger. Will update as I run this gun more.

 

[Formidilosus]

I'm in love bros. This is a 30 round group with AAC TMK's.

Never ran an A2 stock so that is kind of a new experience. Also working with a heavy mil-spec trigger. Will update as I run this gun more.

Yes sir. A Larue MBT Two stage in the best? Least expensive, and most reliable option that you could throw in that.

 

[NSI]

Cole you classy bastard. What a rifle and what a group.

Yes throw a Larue in there (I like the curved one). You can FT me if you’re nervous about installing, or we can do it together next month.

-J

 

[Tobe_B]

I’ll second the LaRue trigger. Both my rifles have them. Super reliable and consistent, and they feel great.


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[Long Cut]

I bought this 18” 1-7 twist, .223 Wylde PSA AR back in college. Sat stock for years, until I got bored and began modifying it.

Triggertech Duty Trigger: 3.5# single stage
Aero Precision Enhanced Buffer tube & spring
Tactical EX Stock
Magpul Grip
Radian SD Charging Handle
Radian 45 degree safety
Dead Air Armament Muzzle Break
Bravo Company QD Mounts X2
Geisselle Super Precision Mount
SWFA 5-20


On Order;
WOA 18” 1-7 Rifle Length Gas barrel
SLR Adjustable Gas Block
Otter Creek Labs Polonium

Be Warned; Building AR’s is almost as addictive as shooting them!

 

[Choupique]

18” 1-7 twist, .223 Wylde PSA AR

How's it shoot? Been thinking about getting one of those for a deer rifle.

 

[Imcolej]

Yes sir. A Larue MBT Two stage in the best? Least expensive, and most reliable option that you could throw in that.

Cole you classy bastard. What a rifle and what a group.

Yes throw a Larue in there (I like the curved one). You can FT me if you’re nervous about installing, or we can do it together next month.

-J

I’ll second the LaRue trigger. Both my rifles have them. Super reliable and consistent, and they feel great.


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Thanks for the recommendation/vote of confidence on the LaRue trigger. I'll get one ordered asap.

@NSI , I'll let you know if I run into any problems on the install and thanks for the offer to help.

 

[JDBAK]

Anyone have experience with the Centurion Arms Mk12 uppers?

 

[Long Cut]

How's it shoot? Been thinking about getting one of those for a deer rifle.

Realistically 2” with good ammo.

I haven’t tried with the new trigger yet though. I’d imagine the groups would tighten up some with a lighter and significantly better trigger than milspec

 

[Steel Rain]

So, if a guy had a MK12 Mod0 with proper muffler on the front and wanted to shoot some deer with it, what is the recommended ammo?

 

[khuber84]

So, if a guy had a MK12 Mod0 with proper muffler on the front and wanted to shoot some deer with it, what is the recommended ammo?

77tmk are very lethal.

 

[NSI]

So, if a guy had a MK12 Mod0 with proper muffler on the front and wanted to shoot some deer with it, what is the recommended ammo?

77 TMK, in the AAC loading (from PSA) or the Black Hills loading (@h2so4 can get you some of that).

-J

 

[Steel Rain]

77 TMK, in the AAC loading (from PSA) or the Black Hills loading (@h2so4 can get you some of that).

-J

Thanks. I just messaged @h2so4.

 

[CTXhunter]

@Formidilosus any go to buttstock options for the MK12? Fixed A2? I have a PRS lite on another lower but putting one together for the MK12.

 

[Formidilosus]

@Formidilosus any go to buttstock options for the MK12? Fixed A2? I have a PRS lite on another lower but putting one together for the MK12.

I’m all in A2 if not using a collapsible version.