-Newer, more compact magazine
-Doesn't use too many pieces
-Can have optional front grip
-Rather easy to use
-New improved trigger
-Can be hard to load at first (But becomes easier with some practice)
More Instructables by me.
Note concerning images : Image one shows the MSAU with optional front grip. Image two shows version without it.
Step 1: Main Body: Components
Image 1: Make 1.(Part A)
Image 2: Make 1.(Part B)
Image 3: Make 2.(Part C)
Image 4: Make 3.(Part D)
Image 5: Make 3.(Part E)
Image 6: Make 4.(Part F)
Image 7: Make 3.(Part G)
Image 8: Make 1.(Part H)
Image 9: Make 1.(Part I)
Image 10: Make 1.(Part J)
Image 11: Make 2.(Part K)
Image 12: Make 1.(Part L)
Step 2: Main Body: Construction
Image 1: Add blue and white rods to Part A and a small gear.
Image 2: Add Part B, blue and yellow rods, and a blue spacer.
Image 3: Add Parts C, D, E, F, G, red, gray, and 3-D blue connectors, and yellow and white rods.
Image 4: Add Parts D, E, F, G, H, I, orange, red, and gray connectors.
Image 5: Do as in Image 3, but no rods. Sorry but the image seems to constantly upload like this.
Image 6: Add Part F and a blue spacer.
Image 7: Cover with Part J.
Image 8: Add a small gear, Parts K and L, and silver spacers.
Image 9: Add gray connector.
Image 10: Add orange connectors, blue spacers, and metallic blue clip.
Image 11: Add 2 gray connectors as shown.
Image 12: And another one as shown.
Step 3: Magazine: Components
Image 1: Make 4.
Image 2: Make 1.
Image 3: Make 2.
Image 4: Make 1.
Image 5: Make 2.
Image 6: Make 2.
Step 4: Magazine: Construction
Image 1: Add white rods as shown.
Image 2: Add the other parts as shown.
Image 3: And cover.
Image 4: Loaded with some ammo.
Step 5: Front Handle
Step 6: Use and Operation
Image 1: Attach handle as shown.
Image 2: Insert magazine as shown.
Image 3: Ammo.
Image 4: Rubber band hooked on barrel.
Image 5: Loaded, view of midsection.
Image 6: Safety engaged.
Image 7: Safety disengaged.
Warning- This may cause harm or injury if misused. Do not point it at people. I am not responsible for damage, injury, or death caused by this instructable. Even with safety engaged it can fire. Always treated it as armed.