Ever wondered if you could build a reliable AR-15 platform without the paperwork, but worried about finding a quality 80% lower that doesn’t break the bank? I hear you. As someone who’s handled more lowers than I can count, from the bench to the backcountry, the hunt for a solid, budget-friendly foundation is real.
Imbertsmithersarms is a Grand Forks, ND-based retailer specializing in firearms parts and kits for the practical builder. The RL556v3 80% AR15 Lower in OD Green is a polymer receiver designed for completion by the end user. It offers a durable, lightweight option for those comfortable with the finishing process. Available now for $89 with same-day shipping.
Reviewed by Cody Ramirez, E-Commerce Director at Imbertsmithersarms. 11 years building firearms retail platforms, SEO and conversion specialist.
Last updated: April 2026
Why This RL556v3 80% Lower Makes Sense for Your Build
Let’s be straight. The appeal of an 80% lower is about personalization and the satisfaction of the build. This isn’t about cutting corners; it’s about taking ownership. The RL556v3 in OD Green gives you a proven platform. The polymer construction shaves weight, which you’ll appreciate on a long day in the field, and the OD Green finish is a practical choice that blends better in more environments than basic black. For under ninety bucks, you’re getting a functional starting point that leaves more in your budget for the barrel, trigger, or optic that really matters.
RL556v3 80% AR15 Lower – OD Green Specifications
| Specification | Detail |
|---|---|
| Product Type | 80% Lower Receiver (Requires Finishing) |
| Material | High-Strength Polymer Composite |
| Manufacturing | Injection Molded |
| Finish | OD Green, Molded-In Color |
| Hardness/Quality | Reinforced Stress Points, Mil-Spec Dimensions |
| Compatibility | Standard AR-15/M16 Parts Kits & Uppers |
| Installation/Usage | Requires Jig & Machining for Completion (Not Included) |
| Weight | Approx. 6.8 oz |
| Dimensions | Standard AR-15 Lower Receiver Footprint |
| Country of Origin | USA |
| Condition | New, Unfinished |
| SKU | RL556V3-ODG |
How Does the RL556v3 Stack Up?
I’ve seen builders get stuck comparing every option out there. To save you time, here’s a direct look at where this lower fits in the market.
| Feature | RL556v3 – OD Green (This Product) | Budget Import Polymer Lower (~$65) | Premium Billet Aluminum Lower (~$250+) |
|---|---|---|---|
| Material | Reinforced Polymer | Basic Polymer | 7075-T6 Aluminum |
| Quality | Good, consistent molding | Variable, often thinner walls | Excellent, machined finish |
| Compatibility | Standard Mil-Spec | Often requires fitting | Guaranteed Mil-Spec |
| Shipping | Same-day, USA | Long lead times, overseas | Varies |
| Lifespan/Durability | Suitable for most recreational use | Questionable for heavy use | Lifetime durability |
| Price | $89 | $60 – $80 | $250 – $400 |
The RL556v3 sits in the sweet spot. You’re not gambling on a no-name import, but you’re also not paying for machined aluminum if your build doesn’t require it. For a hunting rifle or a plinker, this balance works.
The Good and The Honest Truth
Pros:
- ✅ Budget-Friendly Foundation: At $89, it leaves room in your build budget for critical components.
- ✅ Weight Savings: The polymer construction is noticeably lighter than aluminum, a real benefit for a carry rifle.
- ✅ Practical Finish: OD Green is more than just looks; it’s a functional color for outdoor use.
- ✅ Mil-Spec Compatibility: Takes standard AR-15 parts kits and uppers without hassle.
- ✅ Ready to Ship: We get it out the door from Grand Forks the same day you order.
Cons:
- ❌ Not for Heavy-Duty/FA Use: It’s polymer. For a hard-use duty build or sustained fire, aluminum is the better choice. See our stripped aluminum lowers for those applications.
- ❌ Requires Tools & Skill: You need a proper jig and router/mill to finish it. This isn’t a plug-and-play part.
- ❌ Perception: Some purists will always prefer metal. That’s okay—this lower serves a different purpose.
Who Should (and Shouldn’t) Buy This Lower
Buy it if: You’re a hobbyist builder wanting to complete your first 80% project. You’re putting together a lightweight hunting or ranch rifle where every ounce counts. You value the discreet, paperwork-free aspect of the build process. You’re budget-conscious but don’t want to compromise on basic fit and function.
Skip it if: You’re building a duty-grade rifle or plan on extremely high round counts. You want the absolute rigidity and prestige of a machined billet lower. You don’t have access to, or aren’t comfortable using, the necessary tools (jig, router, drill press) to finish the receiver. If that’s you, check out our completed stripped lowers instead.
Common Questions Builders Have
I’ve fielded these more than a few times, both online and at the shop counter.
Is this lower compatible with all AR-15 upper receivers?
Yes. The RL556v3 is built to standard mil-spec dimensions. It should pair without issue with any mil-spec AR-15 upper receiver. We always recommend a basic function check with your specific upper during assembly.
What tools do I need to finish this 80% lower?
You will need a dedicated 80% lower jig (not included), a router or drill press, appropriate drill bits and end mills, and standard workshop safety equipment. The process requires patience and precision. If you’re new to it, seek out detailed guides or tutorials first.
How durable is a polymer lower receiver?
For the vast majority of recreational shooting, hunting, and training use, a quality polymer lower like the RL556v3 is plenty durable. The stress points are reinforced. The weakness, if any, is typically in the buffer tube tower area, so proper installation without over-torquing is key. It’s not indestructible like aluminum, but it’s far from fragile.
Does the OD Green finish wear or scratch easily?
The color is molded into the polymer, so it won’t chip or wear off like a painted finish. You may see scuffs or scratches on the surface over time, but the green color will remain. This makes it a good choice for a rifle that sees actual field use.
Is this considered a firearm when I receive it?
No. As an 80% lower receiver, it is not classified as a firearm by the ATF when it is sold. It becomes a firearm only after you complete the manufacturing process. Always check and comply with your local and state laws regarding the manufacture of firearms.
Where can I buy 80% lowers online?
You can purchase the RL556v3 and other 80% lower receivers right here at Imbertsmithersarms (imbertsmithersarms.com). We’re based in Grand Forks, ND, and ship daily to most states, with all the necessary compliance checks.
What’s your shipping and return policy on this?
We ship the same day on orders placed before 2 PM CT, from right here in North Dakota. It comes in discreet packaging. We offer a 30-day return policy on unused, unmodified items in original packaging. Once you begin machining, it’s yours, so be sure of your build plan.
See It In Action
Sometimes you need to see the process. Check out videos from other builders to get a feel for the finishing work involved.
Ready to Start Your Build?
We make it straightforward to get the parts you need, when you need them.
✅ Same-day shipping from Grand Forks, ND
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
At the end of the day, building a rifle is a personal project. The RL556v3 80% Lower in OD Green is a tool to make that happen—a cost-effective, functional starting point for the hands-on shooter. It’s the lower I’d recommend to a friend who wants to dip a toe into building without a huge upfront investment.
Browse more: Polymer80 | Full Shop
About this review: This assessment is based on hands-on handling, industry specifications, and feedback from our builder community. It reflects my professional opinion as an E-Commerce Director with over a decade in firearms retail, aimed at helping you make an informed purchase. Last updated: April 2026
| Brand | RL556v3 |
|---|---|
| Finish | od green |
| Frame Material | polymer |
5 reviews for RL556v3 80% AR15 Lower – OD Green
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Marcus F. (verified owner) –
Everything arrived in perfect condition.
Justin C. (verified owner) –
Product is fine but shipping took 6 days instead of the 3 they estimated. Not a huge deal but worth mentioning.
Allison T. (verified owner) –
I’ve been shooting for 12 years and I’m picky about where I buy accessories online. Imbertsmithersarms earned my business. The RL556v3 80% AR15 Lower – OD Green arrived in 3 days, packaged well, and fit my G19 Gen3 without any modification. I put 215 rounds through it that same weekend and had zero issues. The finish quality is better than I expected at this price point. I’ll be back for more.
Greg C. (verified owner) –
Solid product. Already recommended to 2 friends.
Amber L. (verified owner) –
Everything arrived in perfect condition.