Franklin Armory HK MP5-AR Binary Trigger Group

Franklin Armory BFSIII HK-C1 - Trigger Group For  MP5, SP5

Our new and improved HK-AR Navy ambidextrous lower housing is now paired with Franklin Armory Binary Trigger pack and a Magpul MOE grip to make this complete MP5-AR style Binary Trigger group. This trigger group will be a drop in unit for all in spec HK receivers. Some clones may require slight fitting.

This is the perfect solution for those that are searching for a Navy style Housing as the German H&K Navy and burst housings are becoming a rarity.

As an added bonus our 100% U.S.A made, CNC machined, aircraft grade aluminum lower is a perfect way to stay 922R compliant while creating a unique, custom look to your roller lock firearm! Our new updated HK-AR housing has a QD point at the rear so you can easily and conveniently attach a sling. Factory looking pictographs all hand painted and Cerakoted for a much better look and finish. Exclusively offered only here at HK Parts.

Compatible with:

• MP5, SP5, HK94
• PTR 9c
• AP5
• MP5 style clones & other custom build

Trigger group will work with HK 93, HK91 style receivers but you will need to change ejector lever and hammer spring to accommodate to your correct caliber.  

Trigger Operation:

• Position 1 – Safe –Will not fire.
• Position 2 – Semi – Fires 1 round per pull.
• Position 3 – Binary – Fires 1 round on pull and 1 round on release.

Specifications

• A trigger pull around 4.5 pounds
• Ambidextrous Safety Selector
• Safety Selector will fit in most two and three-position trigger housings