Bravo Company 300BLK 9" Build! DIY Upper Receiver
Parts used in this video:
BCM M4 Upper
Receiver Assembly
https://www.rainierarms.com/bcm-m4-upper-receiver-assembly?acc=c4ca4238a0b923820dcc509a6f75849b
BCM
Bolt Carrier Group
https://www.rainierarms.com/bcm-bolt-carrier-group-full-auto?acc=c4ca4238a0b923820dcc509a6f75849b
BCM Mod 4
Gunfighter Charging Handle
https://www.rainierarms.com/bcmgunfightertm-charging-handle-w-mod-3-large-latch-556?acc=c4ca4238a0b923820dcc509a6f75849b
BCM
KMR Alpha Handguard
https://www.rainierarms.com/bcm-kmr-alpha-5-56mm-keymod-8913?acc=c4ca4238a0b923820dcc509a6f75849b
BCM
Gas Block (make sure the size matches the OD of your choice of barrel)
https://www.rainierarms.com/gas-block-bcm-lgb-625?acc=c4ca4238a0b923820dcc509a6f75849b
Gas
Tube (must be the correct length for your choice of barrel)
https://www.rainierarms.com/gas-tube-6396?acc=c4ca4238a0b923820dcc509a6f75849b
BCM 9" Enhanced Fluted
300 BLK Barrel
http://www.bravocompanyusa.com/BCM-9-ENHANCED-FLUTED-300-Blackout-Barrels-p/bcm-brl-9f-300
.htm
Tools Used:
DPMS Upper Receiver Gunsmithing Block
http://www.amazon.com/gp/product/B00H5JOWPI?ie=
UTF8&camp;=1789&creativeASIN;=B00H5JOWPI&linkCode;=xm2&tag;=t0782-20
Grace USA Roll Pin Holder Set
http://www.amazon.com/gp/product/B00O6HHCOA?ie=UTF8&camp;=1789&creativeASIN;=B00O6HHCOA&linkCode;=xm2&tag;=t0782-20
Double-Faced
Soft Mallet (this is what I'd buy today)
http://www.amazon.com/TEKTON-30812-Double-Faced-Soft-Mallet/dp/B00MWVAUUA/ref=sr_1_3?ie=UTF8&qid;=1464539585&sr;=8-3&keywords;=rubber+hammer
Aeroshell 33ms
MIL-SPEC Barrel Nut Thread
Grease
http://www.amazon.com/gp/product/B01BJ3HE0K?ie=UTF8&camp;=1789&creativeASIN;=B01BJ3HE0K&linkCode;=xm2&tag;=t0782-20
1/2-Inch Drive Torque Wrench (this is equivalent to what I used)
http://www.amazon.com/gp/product/B00C5ZL0RU?ie=UTF8&camp;=1789&creativeASIN;=B00C5ZL0RU&linkCode;=xm2&tag;=t0782-20
Every
AR15 enthusiast should assemble their own AR15 at least once, and I hope this video helps to convince you how easy
it really is. For this build, I use all parts from
Bravo Company USA, including their new 9"
300 BLACKOUT barrel and KMR-Alpha handguard.
This is not a review video, and there isn't a lot of range time, so be forewarned.
It's just a video showing the steps I take to assemble an upper receiver, and you should watch others before deciding how you want to do it.
Be sure to also watch the assembly videos on the channel of my good friend, Mrgunsngear.
https://www.youtube.com/Mrgunsngear