Griffin Armament MK1 AR-15 Stripped Lower Receiver
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Griffin Armament
Overview
The Griffin Armament Mk1 AR-15 Stripped Lower Receiver is crafted from 7075-T6 aluminum, providing a solid foundation for your AR-15 build. With a trigger pin diameter of .154, it is compatible with standard AR-15 components, allowing for straightforward assembly and customization. This lower receiver is frequently used in builds featuring a carbine gas system and chambered in 5.56 NATO, making it a versatile choice for a variety of applications.
Specifications
August 2026 on GunPartPicker
Griffin Armament MK1 AR-15 Stripped Lower Receiver ranked #278 of the 507 lower receivers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #169 of the 1,002 lower receivers builders have added. Builds with this lower receiver are split between 5.56 NATO (57%) and 6mm ARC (21%), split between carbine-length (57%) and rifle-length (29%) gas systems, and nearly all AR-15.
It was in stock most days in August 2026, and today 2 of the 4 retailers we track have it in stock. Prices barely moved in August 2026, holding around $103.50, so there haven't been real sales lately. Buying today, the lowest price is $119.99 at Sportsmans Outdoor Superstore, above August's low of $103.50, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 42 builds that include this one
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Geissele Automatics AR-15 SSA X Lightning Bow Trigger
Magpul MOE K2 Grip Polymer Gray
Geissele Automatics AR-15 Ambi Posi-Lock Safety
Geissele Automatics Super Stainless AR-15 Magazine Release Catch
Geissele Automatics Ultra Duty Checkered Takedown Pin Set
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 4 →Builds in the community that include the Griffin Armament Mk1 Ar-15 Stripped Lower Receiver
| Build | Parts | Total |
|---|---|---|
 | 19 | $1577.42 |
 | 14 | $2707.61 |
 | 18 | $1405.43 |
 | 11 | $1608.94 |
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