.300 Blackout Rifle Kit For The DIY Gunsmith
- If you’re building your own rifle kit is a great option.
- The upper and lower receivers in this rifle kit are black hardcoat anodized.
- All AR-15 parts offered online at Thunder Tactical are machined to mil spec tolerances.
- Proper cycling is ensured because we test fire all fully assembled uppers.
This AR-15 rifle kit for sale is great for the gunsmith looking for a little bit of a longer barrel. The AR-15 parts included in the assembled .223/5.56 upper include the following:
- Upper Receiver
- .300 Blackout 16″ Barrel Phosphate,
- 15″ Quad Rail Handguard
- Low pro gas block
- Carbine Length Gas Tube
- Forward Assist
- Ejection Port Cover
- Charging Handle
- M-16 Bolt Carrier Group
- A2 Flash Hider with Crush Washer
- 80% lower receiver,
- six-position stock with buffer, buffer tube, and spring,
- lower parts kit to complete your lower. Keep shopping our gun parts online to discover what else we have to offer among our selection of pistol and rifle parts.
- Available assembled or unassembled