G&P Airsoft Anti-Rotation Pin Set for WA / G&P WOC / King Arms M4 Gas Blowback GBB Series

"A must have for WOC challenge kits, after roughly 5000 rounds the pins will walk out during full auto fire. 100% Recommend!

"A must have for any GBBR user. Got real tired of my pins falling out and this worked perfectly. Only downside was that evike seemed to have sent me 1 hex screw and one phillips screw instead of 2 hex screws as pictured. Normally I wouldn't have cared but the phillips screw wouldnt fit at all. I ended up just loctiting a smaller screw and it worked perfectly.

Pros:
-Keeps pins from falling
-Looks pretty nice

Cons:
-came with wrong type of screws.