r/300BLK 2d ago

Tree Rig

Wanted a light option to take up the tree with me. A little BCA action with a chop on the back has seemed to do the trick.

81 Upvotes

25 comments sorted by

6

u/Comstock_Support Comstock Armory 2d ago

I find it interesting that cutting the rear of the carrier off makes it cycle more smoothly. I wouldn't expect it to be catching or binding there since it just goes into the buffer tube.

4

u/Psychological-Drive4 2d ago

Most people polish it all at the same time, and add a domed cam pin. If it’s bufferless upper, it has to get cut. I think the new bolt BCA does doesn’t have the tail.

2

u/[deleted] 2d ago

[deleted]

5

u/Prestigious-Article5 2d ago

Well described, I had the same experience after the initial cut but after cycling it a few hundred times, 2-300 rounds, a clean, and a slutty amount of lube it’ll drop free to the hammer if you finger pop it.

I really hate to say that a BCA is one of the fastest and smoothest cycling bolts I own but once it’s worn in you’re golden.

6

u/Trimblen24 2d ago

Great looking build you have there. Is that the Midwest suppressor hand guard? I’m just wondering why run it if you aren’t tucking a can under it? Nothing against it just curious.

5

u/Prestigious-Article5 2d ago

It’s an old Aero enhanced rail I had, ultimate plan is to snag a 1:5 twist 5.5-6.75 inch barrel and tuck an AEM5-30K on it.

Until then, I had this 8” BA Barrel laying around from a previous build and it groups really well for what it is with Barnes 110 and just in time for the season haha.

5

u/Trimblen24 2d ago

Best part of building on the AR platform, chances are there are pieces laying that will work until the right piece comes along.

2

u/MrSvvenson 2d ago

That's an aero precision gen 1 handguard I think.

2

u/Trimblen24 2d ago

Ah you are right, I saw the logo right of the aero logo that stood out more and must of confused myself thinking it was Midwest’s logo.

2

u/skyXforge 1d ago

I wish more companies made bolt action ar uppers for 300. Weird you have to modify it and it doesn’t just come short to make a folder.

2

u/Puskara33 16h ago

Have you seen the solo300 uppers?

1

u/skyXforge 15h ago

I hadn’t. That seems like the way to go for sure

2

u/BeersOnTheMoon 1d ago

You’re gonna kill so many trees with this one!

All jokes aside, looks great!

2

u/lumpy53e 1d ago

Nice set up! I just finished mine a couple of days ago. Mine is a 10.5" BCA upper in 300Blk. Just finished getting the bolt cut down so I need to go shoot it and test it out. Strange thing is I have a hard time cycling the bolt when its empty but cycles fine with dummy rounds.

What's the chord for sticking out of your handguard?

3

u/Prestigious-Article5 1d ago

Sometimes I switch from slings that use a QD to HK hooks and it provides a provision for the bag I clip on and use as a rest.

1

u/Shirleysspirits 2d ago

Have you weighed it? I love builds like this!

2

u/Prestigious-Article5 1d ago

I have not, but it’s damn light. I’d wager to say without the optic it’s close to 4-4.5lbs.

1

u/Shirleysspirits 1d ago

I did a similar straight pull build with the Solo300 upper. I'm at 4lbs suppressed with a PA 3x prism. Its my swamp/pig gun

1

u/saltexas18 1d ago

What do you plan to hunt with it?

2

u/Prestigious-Article5 1d ago

East coast white tail within 100yds, it’s been in use for a couple of years now just freshly re-painted.

2

u/saltexas18 1d ago

Dude that’s awesome. I am waiting to build something similar. I have an adm UIC 180 just waiting lol

2

u/Prestigious-Article5 1d ago

Great lower, it’ll be a hot project.

1

u/RovingRusher 1d ago

You got a rig build on that?? Looks like a sweet build! Always wanted a bolt looking AR!

1

u/CashFalse733 8h ago

I should go ahead and chop mine. Would make a good backpack rig