FrameForge.
Precision polymer frames & 80% lowers, engineered for the builder.
technical, concise, respects the builder's expertise
Featured products
.308 80% Lower – Billet - polymer 80
Enjoy the classic black look with our .308 80% lower receiver. Made from billet 6061-T6 Aluminum, these are incredibly r…
Polymer80 80% Lower Receiver and Jig Kit (LR-308) - polymer 80
We have temporarily stopped production of the Polymer 80 kits, and we are running our final sales for those who wish to …
Polymer80 LR-308 80% Lower Receiver - polymer 80
We have temporarily stopped production of the Polymer 80 kits, and we are running our final sales for those who wish to …
80% Lower Fire/Safe Marked - Anodized Black - polymer 80
Our famous, original forged 80% lower.
80% Lower Fire/Safe Marked - Raw - polymer 80
Our original forged 80% lower, now available uncoated.
80% Lower Patriot Pack - polymer 80
Build all three ARs with one 80% lower combo kit.
Polymer80 RL556V3™ and PF940Cv1™ Bundle - 80% Lower Receiver with Jig, AR15, and 80% Compact Frame with Jig, G19/23 Compatible (Black Only) - polymer 80
We have temporarily stopped production of the Polymer 80 kits, and we are running our final sales for those who wish to …
80 Percent Lower | 80% Lowers | VERY FAST SHIPPING - polymer 80
80 percent lower is a premeir retailer & your source for the best 80% lower AR-15 and .308 80% Lower Receivers, 80% …
Polymer80 AR15 80% Receiver w/ Jig Kit - polymer 80
We have temporarily stopped production of the Polymer 80 kits, and we are running our final sales for those who wish to …
AR9 80% Lower Fire/Safe Marked - 9mm - Billet - polymer 80
A new AR9 80% Lower Receiver tailored for 9mm rounds
Blemished - 80% Lower Fire/Safe Marked - Anodized Black - polymer 80
Sometimes, receivers get a ding or scratch -- it's just part of forging gun parts. We discount these cosmetically blemis…
Forged Fire/Safe Marked 80% Lower Assembly - polymer 80
No AR-15 build is complete without a butt stock assembly – and this one comes with all you need: Black FIRE/SAFE engrave…
Stories & guides
Precision polymer frames & 80% lowers, engineered for the builder.
technical, concise, respects the builder's expertise