BCM grip screwdriver size for installation screw.

[grizzman]

Or.........

Spend $3 on a screw with a hex head. I grew tired of chasing slotted screws in grips quite a long time ago.

GRIP Screws I have in Stock

I've got numerous slotted grip screws in a bag, but none in my ARs.

[Cane55]

their screw is the milspec one. Same as colt, ect.. Schmid provides them with their LPK parts or you can get them from mcmaster-carr.

Your 100% correct. I scoured the internet and the original milspec is a slotted screw for the pistol grip. I have plenty of tools however I don’t have flathead 5/16” six inch screwdriver, so I didn’t want to use a smaller, loser screwdriver and potentially mar or damage the screw since the build isn’t exactly bottom dollar.

[Entryteam]

Lol wut? Take it to a gunsmith? We're talking about installing a pistol grip.

Yeah, I really gotta be missing something, cause I have never had an issue changing grips at all.

[Inkslinger]

Yeah, I really gotta be missing something, cause I have never had an issue changing grips at all.

Neither have I, and I do it with whatever screwdriver looks close enough to get the job done. I’ve never once thought about what the correct size was. And as far as hex heads go, it’s a lot easier to round one of those out than it would be to jack up the slotted grip screw to the point where you couldn’t still get it out. I’m guessing that’s why the milspec ones are slotted.

[ST911]

I prefer slotted screws for the readily available drivers.

[1168]

I know nothing about the TDP for this, but I have a #41584 1/4” Craftsman that fits both Colts and BCMs.

Before we judge the OP, let us remember that sometimes things are not quite as obvious as they seem with screwdrivers. For example, many people malign the shitty soft Phillips screws on Japanese motorcycle carb bowls, when the real problem is that the screws are JIS, not Phillips and many among us are too ignorant/stupid to use the correct tool. And I’ve found myself occasionally grinding flatheads to be better fits on slotted screws. Hell, you’ll note that gunsmithing screwdrivers have a totally different shape to the blade than Stanleys and Craftsmans.

[mark5pt56]

A sliver of duct tape or even some folded paper would solve your problems fairly easily. Most do have that lying about or use a BFSD-one with a flat blade of course

[pinzgauer]

I prefer slotted screws for the readily available drivers.

Which was my rationalization as to why Colt used (and uses) a slotted screw from the very beginning.

Much more difficult to install in an automated line, so they had to use it for a reason.

As much easier as hex is to install / remove, I've used the slots if that's what it came with. Really no big deal.

[P2Vaircrewman]

Those hex grip screws affect accuracy, don't use them if you expect to get 1 MOA. I can't believe 3 pages on grip screw.

[One More Time]

A bit driver with a magnet and a good bit set isn't that much.
Good sets will have hollow ground bits.


I picked up a nice set from the Mac guy that has bits for fasteners I haven't seen.
No Torx Plus though, which sucks as I'm seeing stuff with TP fasteners and had to get a TP20 and TP25.
Those will screw up your day if you don't pay attention.