Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
I have a dozen coming in from a Rocket Hub project by Sierra Nevada Arms. I've seen the videos and it doesn't look difficult. I also plan to pick up non-anodized stripped uppers from Aero Precision so I can dye match them during the anodizing process. I've also thought about going with DIY nickel boron coatings but that would run about $100 per gun to do it.
I chose a 7.5" barrel and paired it with a carbine length rail from UTG (the made in the USA model) but I am probably cutting that down about an inch. The compensator I use doesn't completely clear the end of the rail so I am getting some blow back of the flash. It's not fun having flames coming through the rails.
On one rifle, I've sent it to Bill Springfield - www.TriggerWork.net Bill did a great job in setting the pull at 2.5 lbs and making it extremely smooth. I like it better than the 2 stage on my wife's Rock River.
Looking forward and a little off topic, but still dealing with a lower build....
I have done some research, and looking for some back up from others just to be sure, but If I build a complete upper in .300 blackout and 6.8SPC (2 seperate complete uppers) I can use the current AR lower with these uppers, correct?
Basically, I will have 1 complete upper in .300 BO, and 1 in 6.8SPC.
Go to the range, push 2 pins out, put another upper on and start shooting.
3 complete seperate uppers, 1 complete lower, total of 3 guns....
Looking forward and a little off topic, but still dealing with a lower build....
I have done some research, and looking for some back up from others just to be sure, but If I build a complete upper in .300 blackout and 6.8SPC (2 seperate complete uppers) I can use the current AR lower with these uppers, correct?
Basically, I will have 1 complete upper in .300 BO, and 1 in 6.8SPC.
Go to the range, push 2 pins out, put another upper on and start shooting.
3 complete seperate uppers, 1 complete lower, total of 3 guns....
Just looking for advise...good idea or bad...
Absolutely! I like to mix and match em. I can hunt Deer with my 6.5 and swap uppers for Coyotes. The next day I can put a borrowed .300 blackout upper for hogs! That's the beauty of them.
The morons in CA didn't think that one through. I register the lower and I can put whatever the beep I want on top of it when I go shoot it. Even a BMG single shot upper
From everything I have read, the only upper that requires a non-standard lower is a 9mm. You even if you use a removable mag adapter, the hammer needs to be 9mm specific. Other than that, a lower works with any upper from .22LR to .458 SOCOM.
I would also do some reading on the benefits/drawbacks of the .300 BO and 6.8 SPC. I'm starting to believe the 6.8 may have been a fad. The .300 is taking over. In fact, you can use the same bolt carrier group on the .300 BO as you do with a .223/5.56.
From everything I have read, the only upper that requires a non-standard lower is a 9mm. You even if you use a removable mag adapter, the hammer needs to be 9mm specific. Other than that, a lower works with any upper from .22LR to .458 SOCOM.
I would also do some reading on the benefits/drawbacks of the .300 BO and 6.8 SPC. I'm starting to believe the 6.8 may have been a fad. The .300 is taking over. In fact, you can use the same bolt carrier group on the .300 BO as you do with a .223/5.56.
Yea, not going 9mm....
I also looked at the .458 SOCOM, and it appears that you have to widen the ejeciton port to use it, unless you buy a .458 SOCOM upper, of course that is just what I read onthe internet...not sure if it is true, but a few places said the same thing?
I'm just going to build to have them...that's all. Increase the value and yet spend less money than buying 3 entire AR's.
Anderson Lower, $61
Anderson Blem upper, $51
PSA LBK including the buffer and adjustable stock, $86
Flash hider (3 inch spiral), lowprofile gas block, and carbine length gas tube, $57
Charging handle, forward assist, and dust cover, $40
$295 out-a-pocket...sister in law bought barrel....$160 (H-bar 1x9 twist 16 inch)
I also looked at the .458 SOCOM, and it appears that you have to widen the ejeciton port to use it, unless you buy a .458 SOCOM upper, of course that is just what I read onthe internet...not sure if it is true, but a few places said the same thing?
I'm just going to build to have them...that's all. Increase the value and yet spend less money than buying 3 entire AR's.
I thank all for the input!
From everything I've read, the mod is easy with a Dremel. After you make the first mod, it really becomes easy. I can't wait to get started on my 80% lowers.
Dust cover installed, BTW, if you ever build, put the dust cover on prior to the barrel install.....just easier!
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.
Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
