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Luth-Ar
The Luth-AR MBA-5F carbine stock assembly in Flat Dark Earth is a no-fuss, lightweight buttstock built for shooters who want adjustability without complexity or excess weight. Unlike fixed stocks, the MBA-5 lets you dial in your cheek weld and length of pull with a paddle-style adjustment lever that cycles smoothly across multiple positions—critical when you're running different loads, optics setups, or shooting prone versus supported. The wide, flared cheek rest is molded for a natural, repeatable cheek weld, and the integrated Picatinny rail opens the door to mounting a monopod, sling cup, or other carbine accessories without aftermarket adapters.
This stock pairs the rugged simplicity of the MBA series with genuine utility. The anti-rattle set screw tunes out play when used with Mil-Spec buffer tubes, keeping your setup solid through training sessions or range days. The FDE finish blends into most modern carbine builds and wears well. If you're building or upgrading an AR-15 carbine and want an adjustable stock that won't nickel-and-dime you or add unnecessary bulk, the MBA-5F delivers without compromise.
The MBA-5 works with both Mil-Spec and Commercial carbine buffer tubes, so it adapts to whatever lower receiver you're running. It's Grovtec Quick Detach sling cup compatible, making it a natural fit for shooters who prefer QD attachment points. The flared cheek rest is fixed—this stock doesn't offer vertical cheek adjustment—but the generous flare accommodates optic height and cheek position for most shooters without fussing.
| Brand | Luth-AR |
| Model | MBA-5F |
| Type | Carbine Buttstock Assembly |
| Finish | Flat Dark Earth (FDE) |
| Buffer Tube Compatibility | Mil-Spec and Commercial Carbine |
| Cheek Rest | Non-adjustable, Wide Flared |
| Adjustment | Paddle-style lever |
| Rail | Integrated Picatinny |
| Sling Attachment | Grovtec QD sling cup ready |
The MBA-5F is compatible with both Mil-Spec and Commercial carbine buffer tubes. The anti-rattle set screw allows you to tune out excess play on Mil-Spec tubes.
No. The MBA-5F features a non-adjustable, wide flared cheek rest designed to accommodate most optic heights and shooting positions. If you need full cheek rest adjustability, Luth-AR offers the MBA-3 or cheek rest assembly options for the MBA-4.
The MBA-5F is Grovtec Quick Detach sling cup ready, meaning it's designed to work with QD sling cups, though the cup itself is not included.
You receive the buttstock assembly. The stock requires a separate carbine buffer tube (Mil-Spec or Commercial) to install on your lower receiver.
Luth-Ar
The Luth-AR MBA-5F carbine stock assembly in Flat Dark Earth is a no-fuss, lightweight buttstock built for shooters who want adjustability without complexity or excess weight. Unlike fixed stocks, the MBA-5 lets you dial in your cheek weld and length of pull with a paddle-style adjustment lever that cycles smoothly across multiple positions—critical when you're running different loads, optics setups, or shooting prone versus supported. The wide, flared cheek rest is molded for a natural, repeatable cheek weld, and the integrated Picatinny rail opens the door to mounting a monopod, sling cup, or other carbine accessories without aftermarket adapters.
This stock pairs the rugged simplicity of the MBA series with genuine utility. The anti-rattle set screw tunes out play when used with Mil-Spec buffer tubes, keeping your setup solid through training sessions or range days. The FDE finish blends into most modern carbine builds and wears well. If you're building or upgrading an AR-15 carbine and want an adjustable stock that won't nickel-and-dime you or add unnecessary bulk, the MBA-5F delivers without compromise.
The MBA-5 works with both Mil-Spec and Commercial carbine buffer tubes, so it adapts to whatever lower receiver you're running. It's Grovtec Quick Detach sling cup compatible, making it a natural fit for shooters who prefer QD attachment points. The flared cheek rest is fixed—this stock doesn't offer vertical cheek adjustment—but the generous flare accommodates optic height and cheek position for most shooters without fussing.
| Brand | Luth-AR |
| Model | MBA-5F |
| Type | Carbine Buttstock Assembly |
| Finish | Flat Dark Earth (FDE) |
| Buffer Tube Compatibility | Mil-Spec and Commercial Carbine |
| Cheek Rest | Non-adjustable, Wide Flared |
| Adjustment | Paddle-style lever |
| Rail | Integrated Picatinny |
| Sling Attachment | Grovtec QD sling cup ready |
The MBA-5F is compatible with both Mil-Spec and Commercial carbine buffer tubes. The anti-rattle set screw allows you to tune out excess play on Mil-Spec tubes.
No. The MBA-5F features a non-adjustable, wide flared cheek rest designed to accommodate most optic heights and shooting positions. If you need full cheek rest adjustability, Luth-AR offers the MBA-3 or cheek rest assembly options for the MBA-4.
The MBA-5F is Grovtec Quick Detach sling cup ready, meaning it's designed to work with QD sling cups, though the cup itself is not included.
You receive the buttstock assembly. The stock requires a separate carbine buffer tube (Mil-Spec or Commercial) to install on your lower receiver.
