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Luth-AR
Overview
The Luth-AR MBA-4 Carbine Stock is designed specifically for AR-15 and AR-10 platforms, providing a lightweight yet durable polymer construction. Its carbine tube specification ensures compatibility with standard carbine buffer systems, allowing for smooth adjustments and a secure fit. This stock is often found in tactical and precision builds where weight savings and adjustability are key considerations for the builder.
Prices checked
Builders on GunPartPicker first added the Luth-AR MBA-4 Carbine Stock for AR-15/AR-10, Black - MBA-4-CHP to a build in August 2026.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 6 of the 8 retailers we track have it in stock. The best price crept up from $110.49 to $124.97 over September 2026. Buying today, the lowest price is $110.49 at Ammunition Depot, 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 stock & brace by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Stock Popularity Report →Check it against the live catalog:
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