Griffin Armament MK1 AR-15 Stripped Lower Receiver

Griffin Armament Mk1 Ar-15 Stripped Lower Receiver - Lower Receiver for AR-15 - view 1
Griffin Armament Mk1 Ar-15 Stripped Lower Receiver - Lower Receiver for AR-15 - view 2
Griffin Armament Mk1 Ar-15 Stripped Lower Receiver - Lower Receiver for AR-15 - view 3
Griffin Armament Mk1 Ar-15 Stripped Lower Receiver - Lower Receiver for AR-15 - view 4

33% offVerified 90-day low

$79.99

Usually $119.99 at Sportsmans Outdoor Superstore

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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

MPNMK1SL
Trigger Pin.154
AssemblyStripped
PlatformAR-15
Material7075-T6 Aluminum

Available Merchants(4)

Prices checked

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MidwayUSA logo
MidwayUSA
Free shipping
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In Stock
$123.00
Sportsmans Outdoor Superstore logo
Sportsmans Outdoor Superstore
Flat rate shipping
Shipping Speed
In Stock
$79.99
Primary Arms logo
Primary Arms
Free shipping
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Out of Stock
$103.50
BattleHawk Armory logo
BattleHawk Armory
Shipping varies
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Out of Stock
$103.50

October 2026 on GunPartPicker

Griffin Armament MK1 AR-15 Stripped Lower Receiver ranked #167 of the 588 lower receivers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #176 of the 1,221 lower receivers builders have added. Builds with this lower receiver are split between 5.56 NATO (48%) and .223 Wylde (24%), split between mid-length (36%) and carbine-length (29%) gas systems, and nearly all AR-15.

It was in stock most times we checked in October 2026, and today 2 of the 4 retailers we track have it in stock. Prices barely moved in October 2026, holding around $123, with no real sale all month. Buying today, the lowest price is $79.99 at Sportsmans Outdoor Superstore, which matches the best price we saw in October.

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Frequently Built With

The part most often added in each category by the builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Caliber

48%
5.56 NATO48%
.223 Wylde24%
6mm ARC16%
300 Blackout8%
.22 LR4%

Gas System

35.7%
Mid-Length35.7%
Carbine28.6%
Rifle21.4%
Pistol14.3%

Builds Featuring This Part

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Builds in the community that include the Griffin Armament Mk1 Ar-15 Stripped Lower Receiver

BuildPartsTotal
As a truck gun 18" build
As a truck gun 18"
19$1637.90
18" Griffin Armament carbine build
18" Griffin Armament carbine
14$2656.97
For the family fun 10.5" build
For the family fun 10.5"
18$1454.22
griffin armament 20" build build
griffin armament 20" build
11$1630.91

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