Finding the right parts.
Yes. 300 AAC Blackout does not place additional stress on the lower over 5.56 x 45. In fact, your gas system and buffer mass are much larger factors in how much stress is placed on the lower receiver. A heavy buffer with a lot of gas on a 5.56 gun will place more stress on …
Will a 300 Blackout upper work with the Super Lower? Read More »
LR-308 uppers are not as simple as AR-15 uppers. There are a number of standards. My LR-308 Super Lowers are designed to use the LR-308 / DPMS standard. Unfortunately, not all companies properly name their uppers, so care is needed. Bear Creek Arsenal, Aero Precising, and KAK all make LR-308 uppers that will work with …
This depends on what Super Lower you want to print. The single rib Super Lower will work with almost any AR-15 upper receiver. However, the double rib lower must be used with slick side uppers that do not have a forward assist. Mil-Spec uppers will work with the single rib lower, as will Aero Precision …
LR-308 parts are very confusing. There are a number of standards, and many of the parts are not interchangeable. I would only use parts that are specifically “LR-308” or “DPMS” compatible. Palmetto State Armory PA-10 kit’s are a notable example of a kit that is not compatible, the bolt hold open lever is the wrong …