retro bolt?

[Blennidae]

I have a used Retro that I got for a good deal because it came without a bolt. I have a standard foamy, a foamyless, and a venturi bolt. I just put my foamyless on it.

My Emag came with a longnose foamyless bolt. Is there a reason for the longnose is used on Emags? Should I get one for my retro, or is the standard foamyless bolt fine.

What bolt comes standard on mags now?

[Potatoboy]

The new standard is Long nose foamieless. Long nose reducees blowback some. You can use the standard bolt on the ReTro, but if you have problems switch to a long nose.