Outfitters Score™
Good
Maxim scores as a quality build with average pricing and a bare-bones configuration.
Our proprietary rating combines brand tier, price percentile within the caliber, feature completeness, barrel versatility, retailer availability, caliber practicality, and use-case fit.
Short Barreled Rifle (SBR)
This is a Short Barreled Rifle (SBR) regulated under the National Firearms Act. Purchase requires an approved ATF Form 4 and $200 tax stamp. Transfer must go through a Class 3 SOT dealer.
Full Specifications
Overview
| Brand | Maxim |
| Rifle Type | rifle |
| Platform | AR15 |
| Caliber | 5.56 NATO |
| UPC | 680017497866 |
Barrel
| Barrel Length | 10.3" |
Muzzle
| Suppressor Ready | No |
Sights & Optics
| Optic Ready | Yes |
Dimensions & Weight
| Magazines Included | 1 |
Compliance
| CA Compliant | No |
| Classification | SBR (NFA) |
| NFA Item | Yes |
What's Included (Complete Rifle)
This is a complete, ready-to-shoot firearm.
Upper Receiver
Lower Receiver
Barrel
10.3"
Bolt Carrier Group
Handguard
Stock
Grip
Trigger
Muzzle Device
Charging Handle
Gas Block
Gas Tube
Buffer Tube
Backup Iron Sights
Optic
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Manufacturer · Tier 2
See everything Maxim Defense→
Build Guide
See our Suppressor-Ready Build→
State Check
This rifle has NFA or magazine considerations →
Defense SDX-510 SBR 5.56x45mm, 10.3" Barrel, Flat Dark Earth Cerakote, DSX-D Suppressor, 30rd
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