3.5" Short Buffer Tube System (QD End Plate)
This 3.5" short buffer sytem transforms your AR pistol into an even shorter and more compact backpack gun. We offer 3 different options of endplates for this system 2 of which are to be used in conjunction with a sling. Other than a spanner wrench no additional tools are needed outside your armorer's tool box.
- 7075-T6 AIRCRAFT GRADE ALUMINUM BODY
- TYPE III ANODIZED TO MIL-A 8625 SPECIFICATIONS
- MADE IN THE USA
- SPECULATED PROTRUDING LENGTH OF 3.5" (DEPENDING ON VARIATION OF LOWER RECEIVER)
Tools needed to install:
- Spanner type castle nut wrench (Most 3 prong wrenches will not fit properly)
Parts needed to install:
- Mil-Spec lower parts kit.
***Please install and stage all components of a lower parts kits prior to installing the short buffer system.
- If the guide rod is not already threaded onto the buffer tube end cap, apply blue Loctite (not included) onto the thread of the guide rod and proceed to thread onto the cap until hand tight.
- Install the bolt carrier insert through the rear channel of your bolt carrier group. This should be dropped in without any resistance. (For PCC BCG’s 9mm-.45ACP make sure the weight is removed before installation)
- Insert and prep the BCG into the upper receiver and prepare for mounting onto lower receiver.
- Stage the castle nut and end plate provided as you would a Mil-Spec kit.
- Insert the buffer retainer spring and buffer retainer pin onto the lower receiver
- Thread on the staged buffer tube until contact with retaining pin.
- Thread castle nut by hand so end plate covers the installed takedown pin spring
- Use spanner wrench to tighten castle nut over to lower receiver
- Install upper and lower receiver with BCG inside the upper receiver
- Insert the recoil spring over the guide rod that was been attached to the end cap.
- Using force to counter the spring tension, thread the cap over to the end of the buffer tube until snug. (Loctite is recommended)
- Dry cycle the charging handle to assure weapon cycles before live firing.