80 Lowers by RMF
80 Lowers by RMF manufactures custom billet 80% lower receivers from their Springfield, Oregon facility. Unlike most vendors, they build each part after you order it—no pre-stock inventory sitting on shelves. This approach lets them offer extensive customization without carrying 896+ SKUs. AR-15 Pla...
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Full description and what we offer
80 Lowers by RMF manufactures custom billet 80% lower receivers from their Springfield, Oregon facility. Unlike most vendors, they build each part after you order it—no pre-stock inventory sitting on shelves. This approach lets them offer extensive customization without carrying 896+ SKUs.
AR-15 Platform - Standard Billet AR-15 80% Lower - Lightweight (LW) AR-15 80% Lowers - Skeletonized AR-15 80% Lowers - Ultra Skeleton AR-15 80% Lowers - Available as single lowers or complete receiver sets
AR-10 / .308 Platform - DPMS type 80% lowers (Billet, Lightweight, Skeletonized) - SR25 type 80% lowers (Billet, Lightweight, Skeletonized) - Receiver sets combining upper and lower
AR-9 / 9mm Pistol - Lightweight AR-9 80% Lowers (Colt mag pattern) - Skeletonized AR-9 80% Lowers (Colt mag pattern) - Limited run production
They machine from 6061-T6 aluminum as standard (with 7075-T6 available on request). Each part can ship in: - Raw (uncoated, ready to finish yourself) - Bead Blasted (smooth matte gray finish) - Black Anodized (Type II anodize, durable finish) - Cerakote (custom H-Series ceramic coating)
Standard Cerakote colors available: Burnt Bronze, Graphite Black, Magpul FDE, Magpul OD Green, Tungsten Grey
Custom H-Series options: Browns, Bronze-Gold-Tan-Yellow, Greens, Greys, Black-White-Silver, Pink-Red-Orange-Purple, Blues :::
- •Ambi bolt release (X-Ambi AR-15 and AR-9 versions)
- •Selector engravings (multiple design options)
- •Distressed/Battleworn colors (new feature as of Sept 2025)
- •Rear TD detent screw to bolt catch option
- •Proprietary Gen2 design with custom tapered round stock mount
- •SAFE/FIRE markings on both sides
| Item | Original | Sale Price |
|---|---|---|
| LW AR-15 80% Lower | $119.99 | $99.97 |
| Ultra Skeleton AR-15 80% | $139.99 | $119.97 |
| Billet AR-15 Receiver Set | $239.99 | $209.94 |
| LW DPMS .308 80% Lower | $159.99 | $139.97 |
| SR25 type .308 80% Lower | $159.99 | $139.97 |
| AR-9 LW 80% Lower | $179.99 | $149.97 |
Current savings: 12-15% off select products (auto-applied at checkout)
Standard shipping costs: - Single part: $12 - Two or more parts: $18 - Free shipping on orders over $299
Build times vary by finish: - Raw/Bead Blasted: 1-3 days (dedicated CNC conversion takes 5-8 minutes per part) - Anodized/Cerakote: 1-3 weeks (parts batched, sent to coater, processed on their schedule)
Orders don't ship Sundays or holidays. All parts ship via USPS Priority Mail.
"The August 2022 ATF Rule Change had no impact on our business since we are only selling 'Receiver Blanks' as defined by ATF, and we do not serialize our 80 percent lowers. We will continue to feature our 80% lower receivers which are not banned now and are still legal to buy in most states."
Shipping restrictions: Cannot ship to CA, CO, DE, IL, MD, NJ, NY, OR, RI, WA, or DC. Check state/local laws before ordering.
Their blog covers: - Differences between AR-10, DPMS, and SR25 platforms - AR-15 barrel length selection - Muzzle devices (compensators vs. brakes vs. flash hiders) - Anodized vs. Cerakote coatings - Trigger pull weight for precision - Proper AR-15 grip and stance - Forward assist necessity
- •Introduced 80% Builder Sets (Sept 2025)
- •Added limited-run AR-9 80% lowers
- •Multiple selector engraving options
- •Distressed/battleworn color finishes
- •Rear TD detent screw bolt catch option
80 Lowers by RMF 630 30th St, Suite 110 Springfield, OR 97478 Email: [email protected]
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