null
bolt knob upgrades

MasterPiece Arms

MPA BA RAT Barricade Stop

$124.99

The RAT Barricade Stop is designed to be used on the MPA BA and BA Comp Chassis.  This accessory uses our Rat Base, Pivoting Barricade Stop and spring locking pin system.   Made in the USA

Add to Cart

MPA RAT EVOPOD ADAPTER

$79.99

The RAT Evopod Adapter is designed to be used with the Modular Evolution Evopod Bipod system. This includes our RAT Base, (2) FHCS and the Evopod Adapter. This will allow our RAT system to be...

Add to Cart

MPA RAT Magnetospeed Adapter

$89.99

The RAT Magnetospeed Adaptor is used on our RAT System (Rapid Adjustment Technology). It is designed to provide an attachment method of a Magnetospeed Ver. 2 & 3 to the RAT Dovetail Plate (Spigot...

Choose Options

MPA EVG (Enhanced Vertical Grip)

$39.99

This new injected molded Vertical Grip is designed for the MPA BA Chassis System. The grip design includes a true Vertical interface with the rifle, an Enlarged Palm Swell, Trigger Finger Support...

Add to Cart

MPA RAT Picatinny Rail Adaptor

$89.99

The RAT Picatinny Rail Adaptor is used on our RAT System (Rapid Adjustment Technology). It is designed to provide an attachment method for items that interface with a picatinny rail.  This...

Add to Cart

MPA Spigot Mount

$34.00

This Spigot Mount is designed to be used with the MPA BA Lite Chassis and or Rifle and our newer BA Chassis and Comp Chassis.. It is installed by removing the picatinny rail from the existing...

Add to Cart