Broken Arms Project X 80% AR-15 CNC Lower Receiver Black
Broken Arms Project X 80% AR-15 CNC Lower Receiver Black
Original price was: $129.99.$119.97Current price is: $119.97.
Project X 80% AR15 CNC Lower Receiver Black
- Hard black anodized type III (mil-spec) DI sealed.
- Fully CNC machined from solid 6061 aircraft-grade aluminum
- We ONLY purchase raw aluminum manufactured in the USA
- Mil-Spec broached mag well
- Glass bead blasted.
- 6-32 pin/screw for the bolt catch. (replaces roll pin)
- Added nylon tipped screw in the rear of the lower. (removes slop between upper and lower after a lot of use)
1 in stock (can be backordered)
*Please allow an additional 3-5 business day processing time for this item*
Project X 80% AR15 CNC Lower Receiver
What is Project X?
Our team has been modifying and improving their Broken Arms lowers since 2011. Each revision brings more comfort, reliability, and style to your builds. No gimmicks, no toys.
Project X is our tenth revision and brings the best we have to offer through years of real-world experience and your feedback.
Project X looks great with Magpul® PMAG magazines.
- Hard black anodized type III (mil-spec) DI sealed.
- Fully CNC machined from solid 6061 aircraft-grade aluminum
- We ONLY purchase raw aluminum manufactured in the USA
- Mil-Spec broached mag well
- Glass bead blasted.
- 6-32 pin/screw for the bolt catch. (replaces roll pin)
- Added nylon-tipped screw in the rear of the lower. (removes slop between upper and lower after a lot of use)
Project X will work with these calibers:
Rimfire calibers
- .17 Mach 2
- .17 HMR[1]
- .17 Winchester Super Magnum[1]
- .22 Long Rifle[2]
- .22 Winchester Magnum Rimfire[1]
Centerfire calibers inch measurement
- .17 Mach IV
- .17 Remington Fireball
- .17 Remington
- .17-223
- .20 Practical
- .204 Ruger
- .222 Remington
- .223 Remington
- .22 PPC
- .22 Nosler
- .224 Valkyrie
- .224 Kritzeck (Shortened .223 Remington neck)
- .223 Winchester Super Short Magnum
- .243 LBC
- .243 Winchester Super Short Magnum
- .25 Winchester Super Short Magnum
- .25-45 Sharps
- .277 Wolverine (6.8×39mm)
- .30 Carbine
- .30 Remington AR
- 30 American
- 300 OSSM
- 300 AAC Blackout (7.62×35mm)
- .300 Whisper
- .350 Legend
- 358 Yeti - Wildcat
- 375 SOCOM
- .40 S&W
- .45 ACP
- .450 Bushmaster
- .458 SOCOM
- .50 Action Express
- .50 Beowulf
Centerfire calibers metric measurement
- 5.45×39mm
- 5.56×45mm NATO
- FN 5.7×28mm
- 6×45mm
- 6.5mm Grendel
- 6.8×39mm (.277 Wolverine)
- 6.8mm Remington SPC
- 7.62×37mm Musang
- 7.62×39mm
- 7.62×40mm Wilson Tactical
- 7.92x33mm Kurz
- 9mm Parabellum
- 10mm Auto
- 9x39mm
80% Frame Shipping Restrictions:
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Hawaii
- Illinois
- Maryland
- New Jersey
- New York
- Oregon
- Puerto Rico
- Rhode Island
- Washington
- Philadelphia, PA
A 15% Restocking Fee will be deducted from refunds for orders placed from these locations.
It is the customer's responsibility to know all their local applicable laws that apply. Please stay informed and complete your research before making any purchase. Due to the volatile nature and ever-changing laws regarding unfinished frames and lowers, these items are not returnable. Warranties are handled by Broken Arms directly unless otherwise stated. A 15% cancellation fee will be charged to orders containing these parts with shipping addresses in the above-outlined states.