Ultralight Ultralight Rifles

[gtriple]

I’ve been wondering about the farrow tech. I have the paint on mine and you can see where it has been flexing and the paint is flaking.

Side note for those interested, I got the 95gr TMK up to 2540fps from the 16” barrel in 6x45 today. That would get it to 450 yards before it drops below 1800fps.

I was probably being a little rough on it trying to eject a round that was bound up.

I think I'm going to put on an extended charging handle for awhile until it really smooths out. Do you know if any side charging AR handle will work?

 

[Taudisio]

I was probably being a little rough on it trying to eject a round that was bound up.

I think I'm going to put on an extended charging handle for awhile until it really smooths out. Do you know if any side charging AR handle will work?

I have not had the same issue, and I haven’t had to swap them out. I have taken the solo handle off a few times for cleaning and it seems you could easily drill out another handle of your choosing and use the existing bolt screw/bolt carrier.

 

[gtriple]

Anybody got a recommendation for an ultralight mlok to arca rail that works with the flat bottom of the Jag handguard?

 

[SteveAndTheCrigBoys]

Anybody got a recommendation for an ultralight mlok to arca rail that works with the flat bottom of the Jag handguard?

I went with an SRS 4”. It’s 1.7oz. Didn’t realize they had better options at the time.

SRS 4″ / 6″ / 8″ / 11″ Arca – Salmon River Solutions

www.salmonriversolutions.com

Will swap it for one of the mini’s, they claim 0.55 oz.

SRS Arca Mini – Salmon River Solutions

www.salmonriversolutions.com

 

[gtriple]

I went with an SRS 4”. It’s 1.7oz. Didn’t realize they had better options at the time.

SRS 4″ / 6″ / 8″ / 11″ Arca – Salmon River Solutions

www.salmonriversolutions.com

Will swap it for one of the mini’s, they claim 0.55 oz.

SRS Arca Mini – Salmon River Solutions

www.salmonriversolutions.com

do you think the mini will work for a flat rail?

 

[SteveAndTheCrigBoys]

do you think the mini will work for a flat rail?

Can’t think of why it wouldn’t, looks to be the same depth as the 4”. I’ve had the 4” on my Jag in and out of a tricer LP head a couple dozen times now, works great.

 

[gtriple]

Can’t think of why it wouldn’t, looks to be the same depth as the 4”. I’ve had the 4” on my Jag in and out of a tricer LP head a couple dozen times now, works great.

This looks like a pretty good option too if you need a bit more rail length. 3" for 0.8oz.

Modular Arca Rail System MLOK - Sokek Solutions

The Modular Arca Rail System (M.A.R.S.) is manufactured with carbon fiber reinforced nylon. These arca rails provide a very good balance of strength and weight, and adhere to the RRS Dovetail Standard. This modular system allows you to combine any of our arca rail sizes and the hardware included...

sokeksolutions.com

 

[gtriple]

@SteveAndTheCrigBoys code LRH10 gets 10% off at SRS

 

[Hardly_Hangin]

I received my complete KP-15 receivers today, and am impressed with how beefy they feel while still being lightweight. Skeletonizing the rifle might be tough, the inside of the buttstock is mostly hollow, with ribbed sections on the top and bottom to add strength and probably provide extra mating surfaces for the vibration welding used to connect the left and right sides of the receiver.

The recoil pad was lightweight and mostly hollow, as was the grip. I was surprised to find it was hollow with reinforcing ribs when I ran a 1/2" bit inside to see if I could get rid of some plastic.

I swapped the buffer for Taccom ULW delrin buffer (1.1oz), swapped the mag release, hammer, and trigger out for New Frontier Armory polymer parts.

Weights:

• As received, full assembly: 27.7oz
• Buffer: 2.8oz
• Recoil pad w/screws: 1.3oz
• Modified, full assembly: 23.9 oz

I installed a 16" Faxon 6mm ARC barrel, with their 10" carbon fiber handguard, on an Aeroprecision upper, with a lightweight Brownells bolt that I picked up on sale earlier this year (Memorial Day sale?). Total weight with a magazine came to 4lb 14.5oz. Lightweight, but not ultralight at all. An Aeroprecision scope mount will add 3.4 oz more, and if I add a 6x SWFA (likely), it will end up a chunky ~6lb 6.5oz.... plus a suppressor....

View attachment 613311

Finally finished the whole thread- could have overlooked but is this the only gas gun on here?

Building my first gas ar in 223/5.56 and although im not chasing ULUL i do want to optimize for suppressed and lightweight.

 

[Trackselk]

Finally finished the whole thread- could have overlooked but is this the only gas gun on here?

Building my first gas ar in 223/5.56 and although im not chasing ULUL i do want to optimize for suppressed and lightweight.

Not sure, but as you probably know, the gas variant wrecks your hearing even with a suppressor. I wouldn't bother to make a muzzle heavy, extra long, expensive suppressed AR since it's still loud.

On the other hand. I do a 2-3 week pack trip in the wilderness every spring where I lightly hunt blackbears. But, since I will 99% get the drop on them in the open country, I'm thinking hear pro would be more sensible than hauling my suppressor many miles, especially if I have a good fall in the rough terrain. Might make sense to give that rifle some gas...

 

[Hardly_Hangin]

Not sure, but as you probably know, the gas variant wrecks your hearing even with a suppressor. I wouldn't bother to make a muzzle heavy, extra long, expensive suppressed AR since it's still loud.

Yes, but its still better than my 30-06 with a brake lol.

I have a 10 year old cheap milspec heavy ar now with a 1:9 twist barrel that needs updating and my hope was to build a new lighter upper for it and jump on the 223 77tmk bandwagon. I minimum need a new barrel to stabilize heavier bullets- right?

Then based on experience, evaluate either not changing anything, or build a straight pull ULUL AR or hit the easy button and get a traditional bolt action.

If I'm going to suppress later i might as well do it now while I'm at it and see how it goes.

am i on the right track or chasing rabbits down empty holes? Seemed like a logical babystep progression

 

[BREAKCONTACT]

Yes, but its still better than my 30-06 with a brake lol.

I have a 10 year old cheap milspec heavy ar now with a 1:9 twist barrel that needs updating and my hope was to build a new lighter upper for it and jump on the 223 77tmk bandwagon. I minimum need a new barrel to stabilize heavier bullets- right?

Then based on experience, evaluate either not changing anything, or build a straight pull ULUL AR or hit the easy button and get a traditional bolt action.

If I'm going to suppress later i might as well do it now while I'm at it and see how it goes.

am i on the right track or chasing rabbits down empty holes? Seemed like a logical babystep progression

If you want to change your barrel for length or weight reasons, go for it, if it's just wondering about bullet stability, 1 in 9 is fine, worst case is your actual use BC might be slightly lower than stated values, non issue inside 400.

 

[gtriple]

I'm selling my backup barrel. It was $210 new, $50 for my gunsmith to plug the gas hole, and a couple hours for me to sand the feed ramps. You can save yourself the headache and get it ready to go.

I didn't shoot much through it, but the one group it did shoot was sub moa.

WTS/WTT - Faxon 16" Match Pencil 223 Wylde Barrel - Portless

Faxon 16" Pencil Match Barrel in .223 Wylde. Material is Stainless Steel 5R. Paid $210 from Brownells for this. NOTE: the gas hole has been permanently plugged. You will not reverse it. This is only for a non-gasser AR. I have also sanded the feed ramps to keep bullet noses from sticking...

rokslide.com

 

[KyleR1985]

I'm selling my backup barrel. It was $210 new, $50 for my gunsmith to plug the gas hole, and a couple hours for me to sand the feed ramps. You can save yourself the headache and get it ready to go.

I didn't shoot much through it, but the one group it did shoot was sub moa.

WTS/WTT - Faxon 16" Match Pencil 223 Wylde Barrel - Portless

Faxon 16" Pencil Match Barrel in .223 Wylde. Material is Stainless Steel 5R. Paid $210 from Brownells for this. NOTE: the gas hole has been permanently plugged. You will not reverse it. This is only for a non-gasser AR. I have also sanded the feed ramps to keep bullet noses from sticking...

rokslide.com

Could we all insert “ULUL” in the classified post title? That way we can search the classifieds for ULUL related stuff - I’m confident everyone here has stuff everyone else here can use!

 

[JBradley500]

How did he plug the gas port @gtriple

 

[gtriple]

How did he plug the gas port @gtriple

Drilled, tapped, inserted set screw, milled off the top, and then tack welded it in place.

 

[ztc92]

I may be building one of these in the near future and am starting to think about optics. I’ll likely pick up a primary arms 5x as others have suggested.

I don’t have the money right now but for anyone with money to burn, the Aimpoint Comp M5B could be amother good solution at around 5-6 oz. It’s a red dot but has a turret you can dial. I had a chance to use a friends on his AR-15 and we were repeatedly hitting a 24” target at 500 yards with ease.

The sight comes with multiple turrets so you can find the one that matches the ballistics of the load you are shooting.

Aimpoint CompM5b 2 MOA, 39mm Spacer w/LRP Mount & 5 Ballistic Turrets Reflex 200624

FREE SHIPPING on Aimpoint CompM5b 2 MOA, 39mm Spacer w/LRP Mount & 5 Ballistic Turrets Reflex 200624

www.eurooptic.com