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Griffin Armament
Overview
The Griffin Armament MK2 Ambi Stripped AR-15 Lower Receiver is designed for builders seeking a versatile foundation for their custom rifles. With ambidextrous controls for ease of use, this forged lower made from 7075-T6 aluminum enhances functionality, while the flared magwell facilitates quicker magazine changes. This lower is well-suited for multi-caliber builds, commonly paired with mid-length gas systems to provide a balanced shooting experience.
Griffin Armament MK2 Ambi Stripped AR-15 Lower Receiver - Ambidextrous Controls - Flared Magwell - Anodized Black - MK2AL
Prices checked
Griffin Armament MK2 Ambi Stripped AR-15 Lower Receiver - Ambidextrous Controls - Flared Magwell - Anodized Black - MK2AL is the seventh most added lower receiver on GunPartPicker so far in October 2026, behind the LMT MARS-L Ambidextrous AR-15 Stripped Lower Receiver, with about 3% of all lower receivers added to builds. Up from #11 in September. Builds with this lower receiver are mostly chambered in 5.56 NATO (70%, then .223 Wylde 15%), split between mid-length (47%) and carbine-length (34%) gas systems, and nearly all AR-15.
It was hard to find in September 2026, in stock on only 9 of the 17 days we checked, and today 3 of the 5 retailers we track have it in stock. Prices barely moved in September 2026, holding around $208.95, so there haven't been real sales lately. Buying today, the lowest price is $208.95 at Primary Arms, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every lower receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Lower Receiver Trends →Check it against the live catalog:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Griffin Armament MK2 Ambi Stripped AR-15 Lower Receiver - Ambidextrous Controls - Flared Magwell - Anodized Black - MK2AL
| Build | Parts | Total |
|---|---|---|
 | 28 | $3326.17 |
 | 25 | $1869.31 |
 | 14 | $959.45 |
 | 17 | $1756.27 |
 | 16 | $1650.32 |
| 16 | $933.42 |
2 global ratings
Top reviews
Griffin Armament MK2 ambi stripped lower has the flared mag well for faster reloads and ambi cuts for ambi selectors. Black anodize is consistent across the receiver. Mate to a forged upper has zero rattle. Solid ambi base.
Griffin Armament MK2 ambi lower is the best billet-feel lower Ive owned at this price point. Ambi controls work without modification. Flared magwell speeds reloads. Tight tolerances mate to any quality upper with zero play.
