DRD tactical, manufacturer of the exotic Paratus Clandestine Break-Down Rifle, also makes a takedown kit for conventional AR-15/M16 type rifles.

The kit consists of a complete upper receiver, barrel nut and front rail. Ā The end user supplies the charging handle, bolt carrier group, barrel, gas block, gas tube and muzzle device.
I ordered the kit and the following parts from Brownells:
- DRD quick takedown build kit (100-012-676)
- Criterion 16″ hybrid contour carbine length gas system barrel, 223 Wylde (100-010-179)
- Mk 12 gas block (093-000-026)
- Nitormet gas tube (100-010-978)
- Nib-X bolt and carrier group (100-010-556)
- Nightforce NXS 1-4 (100-012-553)
- ADM recon mount (100-005-761)





The DRD takedown system assembled quickly. Ā The rail system is securely fastened to the upper receiver with no noticeable play.

The longest part of the carbine shown here was the barrel assembly. Ā It measured 18 5/8″ long. Ā This is 6″ shorter than a standard 16″ carbine upper.
I plan on checking to see how much the zero changes each time the rifle is broken down and reporting back.
You can order aĀ DRD quick takedown build kit (100-012-676) from Brownells.

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