
GEN 3 UHP15A Ambi Billet Combo Receiver Set
Ambidextrous GEN 3 UHP15A lower matched to a UPUR-1 upper. Ambi mag release runs on mil-spec internals. Ships to your FFL.
Limit 2 per order.
Part no. CMT-UHP15A-COMBO-G3
The ambidextrous version of the GEN 3 set: bolt catch and magazine release on both sides, nitrided and aggressively textured so they work with gloves and wet hands.
The ambi magazine release runs on standard mil-spec internals. That matters more than it sounds. Most ambi lowers want a proprietary catch, spring or button, which is fine until one walks off the bench two states from home. This one takes the part any shop has in a drawer.
The lower
- Machined from 7075-T6 billet on five-axis CNC equipment
- Type III hardcoat anodize (MIL-A-8625 Type III, Class 2)
- Wire-EDM magazine well profile, flared for fast reloads
- Integrally machined trigger guard — nothing to snap off
- Mil-spec .154 in. trigger and hammer pin holes
- Reinforced buffer tube boss
- Lifetime warranty against manufacturing defects
- Ambidextrous bolt catch and magazine release, black nitrided
- Multi-caliber markings
The upper
- UPUR-1 billet upper, precision five-axis machined from 7075-T6
- Machined to the same tolerances as the lower it is paired with
- Type III hardcoat anodize (MIL-A-8625 Type III, Class 2)
Custom laser engraving is available, including SBR or trust information to ATF specification.
What is not included. A receiver set is a foundation, not a rifle. You still need a barrel, a bolt carrier group, upper and lower parts kits, and a stock or brace assembly to finish the build.
This is a serialized firearm receiver. It ships to a licensed dealer for transfer, not to your door. You must be 21 or older. Give us your dealer's information at checkout, or we will ask for it before the order ships.
| Platform | AR-15 |
|---|---|
| Part type | Combo receiver set, upper and lower |
| Serialized | Yes — the whole set ships to a licensed dealer |
| Controls | Ambidextrous bolt catch and magazine release, black nitrided |
| Material | 7075-T6 billet aluminum |
| Finish | Type III hardcoat anodize (MIL-A-8625 Type III, Class 2) |
| Origin | Machined in Tennessee, USA |
| Lower | GEN 3 UHP15A ambidextrous billet |
| Upper | UPUR-1 billet |
| Magazine release | Runs on standard mil-spec internals |
| Markings | Multi-caliber |
