Semiautomatic build kit for the Swedish K M45D. New and improved design with "J" hook safety and heavier
bolt for easier cycling with a 16" barrel. Approved by the BATF and classified as a firearm and not a machine gun.
This kit comes with the following parts and a five page build guide. Kit includes unfinished receiver tube,
semiauto bolt, hammer, firing pin, retaining pin, firing pin spring, two sets of springs,
guide rods, bolt stop, barrel extension, ejector, and two rivets for the end cap locking lug.
The tube is made from quality American 1020 seamless DOM tubing. The inside diameter is smaller
than the original receiver so that a full auto bolt will not fit inside. The outside diameter
is turned down to the same diameter as the original. The ends have been bored out so that the
original front barrel bushing and the rear end cap will fit. The high quality template has
critical dimensions and some assembly instructions on it. A milling machine is recomended to
finish this tube, however it is possible to finish it with a dremmel tool. Not all parts kits have
the selector switch that makes a semi auto build much easier. If your trigger group does not have the selector switch,
you will have to modify it. You may need additional US made parts in order to be R922 compliant.
MIG or TIG welding is required for assembly. This tube is not a finished receiver. Please note that in order to be
922r compliant, our sample to the BATF included a new 16" barrel and pistol grips which are not included in this kit.
No FFL required. All ATF rules apply.
Due to current supply issues, our semi auto kits may not include the firing pin. If so, the
price will be reduced to compensate for the missing part. The bolts use a standard AR-15 firing pin.
There are two typical sizes of collars on them and our bolts use the ones with the smaller collar of .340”.