Thank you Form I’m now a mk12 believer

walk2112

Lil-Rokslider
Joined
Oct 22, 2020
Messages
288
Do y'all recommend a 1-7 or 1-8 twist?
FWIW I like 1:7 when in a shortish (14.5” to 18”) barrel. Would love to hear PRI owners experience though on how 1:8 does accuracy wise with 77 tmk’s or similar vs 1:7 if they’ve been able to observe both
 

Formidilosus

Super Moderator
Shoot2HuntU
Joined
Oct 22, 2014
Messages
10,569
FWIW I like 1:7 when in a shortish (14.5” to 18”) barrel. Would love to hear PRI owners experience though on how 1:8 does accuracy wise with 77 tmk’s or similar vs 1:7 if they’ve been able to observe both

There’s no difference that 1:7” or 1:8” twist makes on accuracy. The difference is just barrel to barrel variability.
 

JF_Idaho

WKR
Joined
Oct 1, 2023
Messages
406
Location
Treasure Valley
I'm trading a rifle I've had sitting around for a Mk12. Thinking about a (2)2.5-10.

Tough decision. Need some advice.

Credo 2-10x36 w/ no parallax (ffp mil)
Vs trying to chase down an NXS 2.5-10x36 but sfp (mil).

Any other recs sub 1500ish ?

Trying to keep it mk12ish but not too nerdy. Throwing a aem5 on there also.

PRI 18" 1:7 on a BCM lower
 

Formidilosus

Super Moderator
Shoot2HuntU
Joined
Oct 22, 2014
Messages
10,569
I'm trading a rifle I've had sitting around for a Mk12. Thinking about a (2)2.5-10.

Tough decision. Need some advice.

Credo 2-10x36 w/ no parallax (ffp mil)
Vs trying to chase down an NXS 2.5-10x36 but sfp (mil).

Any other recs sub 1500ish ?

Trying to keep it mk12ish but not too nerdy. Throwing a aem5 on there also.

PRI 18" 1:7 on a BCM lower


SWFA 3-9x, SWFA 3-15x Gen 2.
 

wind gypsy

"DADDY"
Joined
Dec 30, 2014
Messages
10,072
I'm trading a rifle I've had sitting around for a Mk12. Thinking about a (2)2.5-10.

Tough decision. Need some advice.

Credo 2-10x36 w/ no parallax (ffp mil)
Vs trying to chase down an NXS 2.5-10x36 but sfp (mil).

Any other recs sub 1500ish ?

Trying to keep it mk12ish but not too nerdy. Throwing a aem5 on there also.

PRI 18" 1:7 on a BCM lower
Why not just just a 42mm obj NXS?
 

77TMK

FNG
Joined
Aug 25, 2018
Messages
80
Location
Tennessee
I'm trading a rifle I've had sitting around for a Mk12. Thinking about a (2)2.5-10.

Tough decision. Need some advice.

Credo 2-10x36 w/ no parallax (ffp mil)
Vs trying to chase down an NXS 2.5-10x36 but sfp (mil).

Any other recs sub 1500ish ?

Trying to keep it mk12ish but not too nerdy. Throwing a aem5 on there also.

PRI 18" 1:7 on a BCM lower
Used NX8 2.5-20. They show up time to time. In use they're closer to a 2.5-12 for real use. The Leupold MK5HD 3.6-18 and the 2-10 are both showing up often under $1500 with full warranties.
 

Hunthigh1

WKR
Joined
Jan 23, 2015
Messages
489
Excuse the dumb question. . . I am learning the AR 15 stuff. Can a guy put a MK12 MOD 0 PRI upper on any decent lower and expect the same accuracy you are observing?

I have an Aero Precision M4E1 lower that I am considering getting an accurate barrel or upper for. Currently, the rifle I own has all Aero Precision parts and a Ballistic advantage 1-7 twist barrel. I am not satisfied with the accuracy and wondering the best way to achieve a 1MOA AR15. . . The results the OP posted are impressive.
 

slowelk

WKR
Joined
Aug 17, 2017
Messages
1,784
Definitely considering.



Not out of the question. If I can track one down used at the right price. Market is a little higher than my budget.

I really feel like the Credo with a side-focus would be the ideal "dmr" scope.
No parallax on a 2.5-10 is not a big deal. I have the Credo you reference and it does fine 1k and and in.
 

6.5x284

WKR
Joined
May 7, 2015
Messages
1,089
Location
NW MT
No parallax on a 2.5-10 is not a big deal. I have the Credo you reference and it does fine 1k and and in.

I’m torn between the Credo 2.5-10 and the newer Credo 1-10. Waiting to see if anything new from NF comes out at shot though.


Sent from my iPhone using Tapatalk
 

cmo5t

FNG
Joined
Jan 10, 2025
Messages
10
Nice rifle! You absolutely have to get the AEM5 can for this. One of the best cans of all time and just such a fun shooting setup. Also, check out the 15.1” NSW RECCE config w/ the KAC FF RAS long hand guard. Hands down my favorite upper…
 

JF_Idaho

WKR
Joined
Oct 1, 2023
Messages
406
Location
Treasure Valley
Picked her up

20250111_062521.jpg

PRI 18
BCM Lower
60° lever
Geissle Trigger
Armaspec captive spring/buffer

Unfortunately he forgot the thread protector. Gonna throw an athlon 3-12 mil dot I have laying around on it until I figure out glass.

My ignorance on private party transfer of a can has led me to realize that isn't happening for the aem5. Now I am considering an ocm5 which I can get locally.

Anyone have any insight on the ocm5?
 
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