ComGraf Pump Action Rifle
ComGraf's Pump Action Rifle is a conversion of the AR-platform which avoids the provisions of the CT Assault Weapons Ban by changing the rifle to a manually operated (not semi-automatic) system. Kits have been prepared for both AR-15 and LR-308 platforms. (This kit can also be used with other popular cartridges such as .300 Blackout, 6.5 Grendel, and 6.8 SPC with the proper barrel choice.) These products are available for purchase here.
User supplied components
Components supplied with kit
This pump action conversion kit consists of six parts and a variety of screws as shown to the left. These parts include:
Full-length Picatinny rail guide
Modified bolt carrier key
Rear guide support and cover
Modified gas block
All of these components can be installed on an existing AR15 without modification to the upper receiver, lower receiver, stock or barrel. It is only necessary to replace the standard bolt carrier key with the unit supplied and attach the other components. You will need a vise block to hold the upper receiver while you work on it, a wrench to remove and replace the standard barrel nut, and a set of Allen wrenches. The system is designed to work with a standard HBAR rifle-length barrel. If you don't have one, it will be necessary to purchase this item separately. (We stock the appropriate barrel and you can purchase it from us.) The kit will NOT work on carbine barrels or other barrels without a constant 1" (nominal) barrel outside diameter and a 0.75" diameter gas block section.
Key features of this design:
The hand grip is supported on the barrel itself and guided (prevented from rotating) by the full-length Picatinny rail.
The bolt is kept engaged in battery by the recoil/buffer spring. No separate locking/unlocking mechanisms are supplied. The charging handle and the forward assist may be retained on the modified rifle for cosmetic reasons, although their functions are no longer needed.
The Picatinny rail sections of the guide and the modified gas block can be used as originally intended to support optics, mechanical sights, lights, and other accessories.
Downloadable assembly instructions are available here.