BRT OPTIMUM Barrels

[Clint]

We are investigating alternative finishes for the barrel extensions.

Thought about adding NP3 to the barrel extensions?

[opngrnd]

Yes, we're starting on a new run now.


These are grouping nicely with the Federal 75 TMJ

100 yards from a bipod, shaky reset and mil-spec trigger in 28 degree weather.

Attachment 56504
More MPR goodness. TMK reloads gave a 4 3/16" group from 416 yards. Shooting from the top of a hay bale to get out of the snow makes a challenging rest, but it apparently works

[1168]

Shot my 14” OPTIMUM yesterday. I don’t have any groups to post, but I can say that it is very soft shooting with M855, A1 stock with Colt rifle buffer and spring, Forward Controls Design 1815 flash hider.

A Guardsman I was shooting with pointed out the low recoil compared to her issued FN M4a1, unsolicited. She was not told anything about the rifle before shooting it. We worked on alternate supported and unsupported positions, barriers, shoulder transitions, and weak side firing.

No stoppages to report. Ambient temp was 40-50F, rainy. I’m using a Forward Controls Design (S)BCG, which is super nice. I’m curious how it will run in colder weather, since it is such a soft shooter. I’m very happy with it thus far. If it vets well, it may end up being my favorite rifle, although I plan to replace the A1 stock with an A5.

Side note: installing a pinned gas system with a URX4 is like building a ship in a bottle, but totally worth it.

[opngrnd]

Clint-other than the barrel length difference, how close are the MPR and 14" barrel in profile?

[Mjolnir]

Wow!

Not sure how I missed this thread.

I’m only about 1/4 thru the thread.

I’ll finish it tonight and will have some input.

Awesome!


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[1168]

Clint-other than the barrel length difference, how close are the MPR and 14" barrel in profile?

I can’t answer this directly, but the 14” with 13” URX4 Mlok about half covered with plastic rail covers, full mass BCG, forged no forward assist Aero upper, regular forged lower with CTR buttstock, H2 buffer, MBUS sights, Aimpoint PRO with covers weighs 7lb 5oz unloaded, no sling. Same upper on a no-frills lower with A1 stock weighs 7lbs 8oz.

[Clint]

All the profiles share similar design parameters and scaling ratios.

So, they're mostly the same, but each is slightly different.

Clint-other than the barrel length difference, how close are the MPR and 14" barrel in profile?

[Mjolnir]

I like what I have read.

What would be required to make one of your barrels work in an LMT MRP upper??

That’s what I’m thinking at the moment.

Thanks.


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[everready73]

I like what I have read.

What would be required to make one of your barrels work in an LMT MRP upper??

That’s what I’m thinking at the moment.

Thanks.


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You would have to have someone alter the barrel so it fits.. Marvin Pitts used to do it but not sure if he does. He is busy usually but you could try contacting him. I also have seen that Randall at ar15barrels.com does them

[Mjolnir]

You would have to have someone alter the barrel so it fits.. Marvin Pitts used to do it but not sure if he does. He is busy usually but you could try contacting him. I also have seen that Randall at ar15barrels.com does them

Thank you kindly!


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