installing comp

[xmikex]

hey guys just got a comp and im getting ready to install it. started readingup on how to do it and seems ill need to torque the comp to crush the washer. what do you guys use to clamp onto the comp? i have a torque wrench but do you use a socket or.....?

sorry im new at this

i have read about aligning the comp and needing to make sure no to over tighten the crsh washer and stuff like that

[2zero9]

What kinda comp is it?

For DIY stuff, I usually youtube everything. Then, if Im still stuck, Ill ask cgn. Youtube is your friend, brother.

[NorCalFocus]

Yup what comp do you have?

[xmikex]

got a titan on another member, i saw one video of the guy using a barrel wrench to tighten it down. looked tha up and said its factory tool to tighten down the barrel and A2 comp. wondering if there was a home remedy so i didnt have to order it

http://www.brownells.com/gunsmith-tools-supplies/rifle-tools/wrenches/ar-15-m16-combination-wrench-ar-15-m16-combination-wrench-sku080-216-015-468-1992.aspx

[NorCalFocus]

Thats a pretty standard armorers wrench.

If I were you, I'd be asking CalGunners in your area if they have said tool and would like to help?

[Dumas1012]

Or get a crow foot wrench the size of your comp.

[Mitch]

Since it has flats on it, why not use a standard crescent wrench? There's probably one in your kitchen drawer.

[xmikex]

I was thinking of just using a wrench and tightening it but wanted to be a little but more scientific about putting it on haha. Plus don't want to overtighten it

[Dumas1012]

OP wants to torque his comp to spec and asking what he should use with his torque wrench. Crescent wrench will not work.

[Mad Machinist]

a specific torque value for a comp isn't really practical......and if the one pictured is the comp you have....I'd suggest a peel washer.....I've seen a crush washer allow a comp to get cocked just a little depending on how the threads on the muzzle are cut.....some mfg under cut them at the base allowing a crush washer to get off center.... and wind up with a bullet strike on the front.....what you want to shoot for is half to a quarter turn after it pulls up snug for it to index properly.....

[fmunk]

Since it has flats on it, why not use a standard crescent wrench? There's probably one in your kitchen drawer.

Because not all crescent wrenches are made equal. Some aren't precise and come lose which increase risk of slipping and damaging the sometimes expensive brake.

Correct size box wrench or armorer's wrench is safer.

[Cheezle56]

Padded crescent wrench... or a padded screwdriver through the slots, Torque isn't critical if you're using a crush washer as long has you get at least 1/2 turn to crush the washer, optimally 1 turn more more on the crush washer. The crush washer can be oriented either direction, there is a "right" way for an A2, but since you're installing a brake, orient it the way that gives you the most even contact on both surfaces. If you're really hardcore, you can have a gunsmith shave down the brake on a late to time the brake perfectly and forgo the washers.

[Mitch]

Padded crescent wrench... or a padded screwdriver through the slots, Torque isn't critical if you're using a crush washer as long has you get at least 1/2 turn to crush the washer,

. . . or crescent wrench with masking tape on the comp. This isn't brain surgery.

[xmikex]

Ok guys here's another question. If you don't have an upper vise block any thoughts of how to hold the upper without damaging it?

[-hanko]

Ok guys here's another question. If you don't have an upper vise block any thoughts of how to hold the upper without damaging it?

The recommended method is to clamp the barrel, NOT the upper. You can get a pair of barrel clamps from Brownells, cheap.