Aero Precision X15 6.5 Grendel AR-15, Custom Build with BCA Right-Side Charging Upper, 18" Fluted Stainless Barrel, Simmons 8-Point 3-9x50, Free-Float M-LOK
This custom AR-15 pairs an Aero Precision X15 lower with a Bear Creek Arsenal right-side-charging upper chambered in 6.5 Grendel. It features an 18" fluted stainless barrel with a 1:8 twist, a free-float M-LOK handguard, and a stainless multi-port muzzle brake. A Simmons 8-Point 3-9x50 scope in a cantilever mount and an installed bipod complete a ready-to-go configuration built on a 7075-T6 hardcoat anodized receiver set.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape. There are some minor scratches and blemishes present.
What’s Included
- Simmons 8-Point 3-9x50 riflescope
- Cantilever scope mount
- Bipod (installed)
- Limbsaver recoil pad (installed)
- 1x 10-round Amend2 polymer magazine for 6.5 Grendel
The rifle is built on an Aero Precision X15 lower with the Aero "A" logo and a pictogram safety selector. The upper is a Bear Creek Arsenal right-side-charging design that uses a dedicated BCG and handle assembly, providing a distinct charging setup while retaining a semi-automatic direct impingement system.
The 18" stainless steel barrel is fluted and threaded, with a 1:8 twist to stabilize common 6.5 Grendel bullet weights. A stainless multi-port muzzle brake/compensator is installed. The free-float aluminum handguard features M-LOK slots and short Picatinny sections for accessory placement.
Optics are handled by a Simmons 8-Point 3-9x50 scope mounted in a cantilever scope mount, and an installed bipod adds stability for supported shooting. The rifle uses a standard manual safety and feeds from a 10-round magazine for a 10+1 capacity.
Ergonomics are enhanced with an adjustable, collapsible polymer stock that includes a QD sling socket and a Limbsaver recoil pad. A Magpul pistol grip is installed. The receivers are 7075-T6 aluminum with a Type III hardcoat anodized finish. This configuration is chambered in 6.5 Grendel and is made in the United States.




