HEFTY CHONKER AR pistol direct blowback buffer
thingiverse
This is an extra heavy buffer for direct blowback ARs running large caliber pistol cartridges such as 45ACP and 10mm AUTO. Its extra inertia will help alleviate forceful ejection, case rupture, and cracked 3d printed lower receiver due to excessive bolt acceleration. You will need a 5/8x4 inch tungsten carbide rod to complete the buffer by epoxying and inserting it into this 3d printed jacket. It should weigh about 350g-500g depending on the type of carbide when completed. After the epoxy cures you can add a cushion plug by kneading a small ball of silicone and sticking it into the recess.
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