One issue with the GG&G oversized bolt release is it can be a cheese grater for your hand.
Also, you should have bought it from Brownells with the discount. You would probably get it quicker. It would be shipped from out of State (arizona) to avoid sales tax.
It is mandatory that you have the proper sized punch to remove this device. Trying to skate by with a drill bit or some other bubba'smith method won't work. You will end up marring the **** out of the receiver. The pin traverses the receiver rail that the BCG reciprocates within. So you have to drive the pin to an exact depth in order to avoid binding. This is easy to do with quality tools.
If you don't have a good set of punches, I recommend these:
http://www.brownells.com/.aspx/sid=3...#565/827525860
http://www.brownells.com/.aspx/sid=4..._Kit/080000241
http://www.brownells.com/.aspx/sid=3..._Set/080685000
Pay attention to where the bolt release spring seats before you disassemble. The spring is not held in place or indexed by anything. It's simply held between the release and the receiver. Note where this place is, to avoid future headaches and guesswork.
I had the GG&G oversized bolt handle for a while also. I noticed that the carrier was more sluggish due to the added weight.
The GG&G unit is approximately 24.5 grams. The stock unit is 12.5 grams.
I would opt for the Titanium model from Design Concepts, but they were sadly discontinued. Kip is releasing a Titanium model in the near future. I predict the machining will be better on Kip's than on the DC model. The knurling was poorly done on the DC handle (cosmetic issue only).
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