There is another guy that has been doing lifters also, he doesn't require you to send in yours, he has them in stock alreaded welded up. His info is below.
SKY TAC- Southern Kentucky Tactical - CJ Smith- gunsmith.
He has new ones in stock,
no need to send yours out, so there is no turn
around times.
He's on FB- located in Bowling Green KY.
1-270-246-3672
Just give him a call....
Sent CJ mine, great work and fast turnaround.