... sorry.... this should be a continuation of my thread ....ive had the bushy for  2 monthe... the pcr is new...i have been around M16 ar15's for years... going on 10 yrs active duty military... anyway... even when a good slap is applied...she is stubborn... never had one new in the grease though.... i have about 8 GI 30 rounders... but have yet to find them... i packed them when i recently moved... the bushy 10 rounder works the best.. the olympic 10 rounder is next and the thermold is just plain hard to insert.... HOWEVER when bolt and carrier are back... the all insert fine... only when bolt is forward is it a real B#@!%... that's with both loaded and unloaded mags.... most guns i have shot/used in military were all well worn in... being either A1's or A2's... so brand new AR's still offer me a learning experience... my bushy does not act like this though.... OK... have to admit... I LOVE the gun and cant wait to get to the range this weekend... thanks...