@Johny_Baba
Do you have any info about the figures of INSAS regarding distance between the back of buttplate to rear sight (wrt eye relief) and the distance between rear & front sight posts (sight radius)...cuz I have a feeling they were made to be as close to the SLR's figures as possible.
Na bhai, will try to ask around, for now i believe in your observation that eye relief (or dist. between buttstock end and rear iron sight post) is almost similar in both but sight radius (dist. between rear and front iron sight posts) is slightly less (about two inches maybe) in INSAS than SLR based on my personal observation of firearms in hands of police etc.
Rest sight radius between both M4A1 and AK is almost same, AK one is just put quite far from shooter's eye,they may have rectified it in modern AKs with those AK-12/15 etc things; and we still opted for AK-203 = vanilla AK sights huh
Imagine transition from AR inspired peep sights to crude AK iron sights,you know,from INSAS to AK-203 ( = 103M)
I kinda agree to one point that AK-12/15 etc has got this two-round burst mode (and a mechanism for that likely) that is kinda undesired for the army after experiences on INSAS but they easily could've asked for a "vanilla" AK-12/15 instead without such fire mode...if they could ask for such thing on AK-203 by downgrading it to AK-103M,you know...