LPR upper?
Printable View
Thanks. It's been great so far.
Yup.
LPR upper
KAC non-ambi Titusville lower
Nightforce 3.5-15 F1 in GDI mount
LMT 762 DMR stock
The current configuration is heavy but it's not intended to be used to run and gun much. However, the BCM grip is a huge help in managing the rifle when necessary. The LMT DMR stock is perfect for me because it allows me to easily switch it back and forth between my LMT MWS and my 556 guns with the Vltor A5 RE, which is all but one.
Working on my personal SPRish gun. My goals were to:
* Install a URX 4
* Pin a KAC low profile gas block onto the 18" BCM 410SS barrel.
* Relieve the URX 4 so that I can get the taper pins in the gas block.
* Re-install Ops Inc 12th model etc.
I picked up the barrel and upper from the Gun Gallery *years* ago. IIRC, Neil showed me how to install URXes with these parts. I didn't specifically pick out a black gas tube -- I ordered some and they came black. I won't complain though. :^)
Start with the stripped parts from the original upper. Started life with a URX 3 then later a URX 3.1 with an off-the-shelf (Troy?) low profile gas block.
https://www.boltcarrier.com/images/kac-lr-001.jpeg
Locate existing pin holes on the gas block, re-drill and ream for new taper pins. I used larger taper pins than the factory ones mainly because the tools were within arms reach.
https://www.boltcarrier.com/images/kac-lr-002.jpeg
https://www.boltcarrier.com/images/kac-lr-003.jpeg
Lapped face of upper receiver -- may as well since I have the gun apart.
[img style='border-style: solid; border-width: 6%; width: 80%;']https://www.boltcarrier.com/images/kac-lr-004.jpeg[/img]
https://www.boltcarrier.com/images/kac-lr-005.jpeg
There was some gunk on the upper that I couldn't wipe away so this is the upper after a few minutes in the ultrasonic cleaner.
https://www.boltcarrier.com/images/kac-lr-006.jpeg
Not shown -- timed and installed URX 4.
Mill a notch and drilled a hole in the URX 4 to accommodate taper pinning the gas block.
https://www.boltcarrier.com/images/kac-lr-007.jpeg
https://www.boltcarrier.com/images/kac-lr-008.jpeg
https://www.boltcarrier.com/images/kac-lr-009.jpeg
https://www.boltcarrier.com/images/kac-lr-010.jpeg
https://www.boltcarrier.com/images/kac-lr-011.jpeg
Re-install Ops-Inc collar and brake.
https://www.boltcarrier.com/images/kac-lr-012.jpeg
And ready to shoot today!
https://www.boltcarrier.com/images/kac-lr-013.jpeg
Mk12 Mod what? :^P
Is thread locker really necessary? The lock-up system is designed to put enough torque on the assembly that it will not come off. The system is very similar to any other rail that attaches to a torqued on barrel nut like the NSR, Geissele, etc. -- the obvious difference is that the rail and barrel nut are integrated.
Awesome! You got it already?
http://i1156.photobucket.com/albums/...psba83bd0b.jpg
Not yet. I'm eagerly awaiting it! This is my USP tactical with Griffon holster. You guys make an outstanding product.
BTW, nice pile of metal and glass you have there.
Pic thread: she once was mine ....
http://i1284.photobucket.com/albums/...ps49053910.jpg