Building an SPR any advice?
Im in the process of building an SPR and I thought I'd ask for some suggestions, opinions, and i guess considerations i should make. Heres the current set up i was thinking of:
Upper receiver: MEGA (had from a previous supposed too build)
Lower receiver: MEGA GTR-3S (already had from another build)
Barrel: Sabre Defense SS 5.56 18" midlength gas system
Handguard:Larue 12" handguard
Optics:Ehhh....thats a whole other question altogether deal with later
BUIS:TROY front and rear
Stock:A2 stock
Bipod:Harris 6-9 with larue adapter
Grip:Magpul MOE
BCG:BCM BCG
Charge Handle: BCM Mod 4
Trigger:Standard Mil-Spec
Brake:Surefire MB556K
There is some debates ive read about the gas system length. I know the true SPR is rifle length, but ive read while doing research that the dwell time between the gas block and end of the barrel may be too short for an 18" barrel and could cause short stroking in the operation. I know the majority use rifle length gas systems for SPRs but is there a huge difference in using midlenth rather than rifle length for an 18" barrel? Id like to hear opinions on this as well.
But if i do go with a rifle length barrel id probably go with the BCM SS ionbonded 18" barrel.
Dont think i missed anything major. Let me know if i did. So, let me know what you think. Thanks in advance.