NBS 7.5″ 5.56 DRP Pistol Quad Rail Complete Upper
An affordable pistol upper assembly without cutting corners. This means using a nitrided steel gas block from an American Manufacturer as opposed to aluminum and quality American Made handguards, paired with a 7.5″ Nitride treated barrel chambered in 5.56 NATO.
This also means taking the time to ensure that the upper will function reliably. We use Permatex 242 on key components while using mil-spec AEROSHELL 33MS Anti-Seize grease on the properly torqued barrel nut and muzzle device.
Bottom line is this: you hear all the time about guys buying a budget upper and it not lasting or having to send it back because of some hardware defect or other issue caused by a careless assembly process. That is why we use quality components and assemble each unit to the highest standard of quality. We want your upper to function flawlessly out of the box. In fact, we guarantee it will.
Lifetime Warranty
| Upper Receiver | NBS Mil-Spec Upper – 7075-T6 Aluminum – Pairs beautifully with any mil-spec lower – M4 Feedramps |
| Barrel | 7.5″ 5.56 NATO 1:7 Twist Pistol Length Nitride |
| Gas System | Pistol Length – APOC Armory Nitrided Steel Gas Block – Stainless Steel Pistol Length Gas Tube |
| Handguard | Dirty Bird Free Float Quad Rail – American Made – Extruded 6061 Aluminum |
| Bolt Carrier Group | AO Precision Phosphate Mil-Spec BCG (May vary due to availability) |
| Muzzle Device | 3.25″ 6061 Aluminum Flash Can in a hard anodized finish |
Surplus Complete Lower Parts Kit
Technical Specs
- 31 piece set to complete a lower.
- Machined parts, no MIM.
- Hammer 8620 Steel
- Trigger 8620 Steel
- Disconnector 4340 Steel
- Trigger Pin 4140 Steel
- Bolt Catch 4340 Steel
- Polymer Pistol Grip
Pistol Buffer / Receiver Extension Kit
| Weight | 110 oz |
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Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
