ACI ACI-10 AR-10 Matched 7075-T6 Billet Receiver Set – Raw Aluminum, DPMS/SR-25 High Profile, Slick-Side Upper
This ACI ACI-10 large-frame AR-pattern matched receiver set pairs a 7075-T6 billet upper and lower in raw, uncoated aluminum. Notable features include a slick-side upper with no forward assist, a full-length 1913 Picatinny top rail in DPMS/SR-25 high-profile geometry, and a custom logo delete on the upper. The lower carries clear SAFE/SEMI selector markings on both sides, MULTI caliber marking, and ACI Winter Garden, FL USA manufacturer identification, with a low serial number on the lower.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Not applicable; no barrel is included.
Specific Condition Notes: The receivers show minimal handling marks. The raw aluminum finish is bright and clean. Please review the photos for close-up views.
What's Included
- ACI ACI-10 matched 7075-T6 billet upper and lower receiver set (completely stripped, raw aluminum)
- Threaded bolt catch retaining pin/screw installed in the lower
This is a large-frame AR-10 platform, DPMS/SR-25-style matched receiver set. Both receivers are precision-machined from 7075-T6 billet aluminum and left in raw, uncoated aluminum for a clean, uniform appearance.
The upper receiver is slick-side with no forward assist and uses external barrel-nut threads. It features a full-length 1913 Picatinny top rail with DPMS/SR-25 high-profile geometry and a right-side ejection port. The upper carries a custom logo delete with no decorative brand logo.
The lower receiver includes an integral trigger guard, a threaded receiver-extension/buffer-tube interface, and a beveled magwell for smooth magazine insertion. Selector legends are engraved SAFE/SEMI on both sides, and the caliber marking reads MULTI.
Markings include ACI Winter Garden, FL USA on the receiver. The lower bears a low serial number. The set is completely stripped, with the only installed part being the threaded bolt catch retaining pin/screw noted above. Made in the USA.




